Help: Consolidate 3.11 release notes

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notes from `Help/release/dev/*` into `Help/release/3.11.rst`.

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+CMake 3.11 Release Notes
+************************
+
+.. only:: html
+
+  .. contents::
+
+Changes made since CMake 3.10 include the following.
+
+* When using :prop_tgt:`AUTOMOC` or :prop_tgt:`AUTOUIC`, CMake starts multiple
+  parallel ``moc`` or ``uic`` processes to reduce the build time.
+  The new :variable:`CMAKE_AUTOGEN_PARALLEL` variable and
+  :prop_tgt:`AUTOGEN_PARALLEL` target property allow to modify the number of
+  parallel ``moc`` or ``uic`` processes to start.
+  By default CMake starts a single ``moc`` or ``uic`` process for each physical
+  CPU on the host system.
+
+* The :module:`FindBLAS` and :module:`FindLAPACK` modules learned to support
+  `FLAME <https://github.com/flame>`__ ``blis`` and ``libflame``.
+
+* Variables containing newlines in their values now get truncated before the
+  newline when they are written to the cache file. In addition, a warning
+  comment is written to the cache file, and a warning message is displayed to
+  the user on the console.
+
+* The :module:`CheckIncludeFile` module ``check_include_file`` macro
+  learned to honor the ``CMAKE_REQUIRED_LIBRARIES`` variable.
+
+* The :module:`CheckIncludeFileCXX` module ``check_include_file_cxx`` macro
+  learned to honor the ``CMAKE_REQUIRED_LIBRARIES`` variable.
+
+* The :module:`CheckIncludeFiles` module ``check_include_files`` macro
+  learned to honor the ``CMAKE_REQUIRED_LIBRARIES`` variable.
+
+* The :module:`CheckIncludeFiles` module :command:`CHECK_INCLUDE_FILES`
+  command gained a ``LANGUAGE`` option to specify whether to check using the
+  ``C`` or ``CXX`` compiler.
+
+* The :variable:`CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS` variable was added
+  to enable setting of default permissions for directories created implicitly
+  during installation of files by :command:`install` and
+  :command:`file(INSTALL)`.
+
+* The :variable:`CPACK_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS` variable was added
+  which serves the same purpose during packaging as the
+  :variable:`CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS` variable serves during
+  installation (e.g. ``make install``).
+
+* A :variable:`CMAKE_JOB_POOLS` variable was added specify a value to use for
+  the :prop_gbl:`JOB_POOLS` property. This enables control over build
+  parallelism with command line configuration parameters when using the Ninja
+  generator.
+
+* The :manual:`cmake(1)` ``--open <dir>`` command line option can now
+  be used to open generated IDE projects like Visual Studio solutions
+  or Xcode projects.
+
+* The :generator:`CodeBlocks` extra generator learned to check a
+  :variable:`CMAKE_CODEBLOCKS_COMPILER_ID` variable for a custom
+  compiler identification value to place in the project file.
+
+* The :module:`CPackIFW` module gained new
+  :variable:`CPACK_IFW_PACKAGE_REMOVE_TARGET_DIR` variable to control
+  if the target directory should not be deleted when uninstalling.
+
+* The :module:`CPackRPM` module learned to enable enforcing of execute
+  privileges on programs and shared libraries.
+  See :variable:`CPACK_RPM_INSTALL_WITH_EXEC` variable.
+
+* :manual:`cpack(1)` gained ``--trace`` and ``--trace-expand`` options.
+
+* The :command:`ctest_start` command no longer sets
+  :variable:`CTEST_RUN_CURRENT_SCRIPT` due to issues with scoping if it is
+  called from inside a function. Instead, it sets an internal variable in
+  CTest. However, setting :variable:`CTEST_RUN_CURRENT_SCRIPT` to 0 at the
+  global scope still prevents the script from being re-run at the end.
+
+* A :variable:`CMAKE_CUDA_SEPARABLE_COMPILATION` variable was added to
+  initialize the :prop_tgt:`CUDA_SEPARABLE_COMPILATION` target property
+  on targets when they are created.
+
+* The :command:`file(DOWNLOAD)` and :command:`file(UPLOAD)` commands
+  gained ``NETRC`` and ``NETRC_FILE`` options to specify use of a
+  ``.netrc`` file.
+
+* The :module:`ExternalProject` module gained ``NETRC`` and ``NETRC_FILE``
+  options to specify use of a ``.netrc`` file.
+
+* The :variable:`CMAKE_NETRC` and :variable:`CMAKE_NETRC_FILE` variables
+  were added to specify use of a ``.netrc`` file by the
+  :command:`file(DOWNLOAD)` and :command:`file(UPLOAD)` commands and
+  the :module:`ExternalProject` module.
+
+* :command:`add_library` and :command:`add_executable` commands can now be
+  called without any sources and will not complain as long as sources will
+  be added later via :command:`target_sources`.
+
+* An explicit deprecation diagnostic was added for policies ``CMP0037``
+  through ``CMP0054`` (``CMP0036`` and below were already deprecated).
+  The :manual:`cmake-policies(7)` manual explains that the OLD behaviors
+  of all policies are deprecated and that projects should port to the
+  NEW behaviors.
+
+* The :command:`doxygen_add_docs` function of the :module:`FindDoxygen` module
+  now supports a new ``DOXYGEN_VERBATIM_VARS`` list variable. Any
+  ``DOXYGEN_...`` variable contained in that list will bypass the automatic
+  quoting logic, leaving its contents untouched when transferring them to the
+  output Doxyfile.
+
+* :ref:`Visual Studio Generators` learned to support the ``COMPILE_LANGUAGE``
+  :manual:`generator expression <cmake-generator-expressions(7)>` in
+  target-wide :prop_tgt:`COMPILE_DEFINITIONS`,
+  :prop_tgt:`INCLUDE_DIRECTORIES`, :prop_tgt:`COMPILE_OPTIONS`, and
+  :command:`file(GENERATE)`.
+
+* The :generator:`Xcode` generator learned to support the ``COMPILE_LANGUAGE``
+  :manual:`generator expression <cmake-generator-expressions(7)>` in
+  target-wide :prop_tgt:`COMPILE_DEFINITIONS` and
+  :prop_tgt:`INCLUDE_DIRECTORIES`.  It previously supported only
+  :prop_tgt:`COMPILE_OPTIONS` and :command:`file(GENERATE)`.
+
+* The :module:`ExternalProject` module learnt to substitute ``<DOWNLOAD_DIR>``
+  in comments, commands, working directory and byproducts.
+
+* A new :module:`FetchContent` module was added which supports populating
+  content at configure time using any of the download/update methods
+  supported by :command:`ExternalProject_Add`.  This allows the content
+  to be used immediately during the configure stage, such as with
+  :command:`add_subdirectory`, etc.  Hierarchical project structures are
+  well supported, allowing parent projects to override the content details
+  of child projects and ensuring content is not populated multiple times
+  throughout the whole project tree.
+
+* A :module:`FindIconv` module was added to locate iconv support.
+
+* The :module:`FindOpenGL` module now prefers GLVND libraries if available.
+  See policy :policy:`CMP0072`.
+
+* The :ref:`Makefile Generators` and the :generator:`Ninja` generator learned
+  to add compiler launcher tools along with the compiler for the ``Fortran``
+  language (``C``, ``CXX``, and ``CUDA`` were supported previously).
+  See the :variable:`CMAKE_<LANG>_COMPILER_LAUNCHER` variable and
+  :prop_tgt:`<LANG>_COMPILER_LAUNCHER` target property for details.
+
+* The :command:`target_compile_definitions` command learned to set the
+  :prop_tgt:`INTERFACE_COMPILE_DEFINITIONS` property on
+  :ref:`Imported Targets`.
+
+* The :command:`target_compile_features` command learned to set the
+  :prop_tgt:`INTERFACE_COMPILE_FEATURES` property on :ref:`Imported Targets`.
+
+* The :command:`target_compile_options` command learned to set the
+  :prop_tgt:`INTERFACE_COMPILE_OPTIONS` property on :ref:`Imported Targets`.
+
+* The :command:`target_include_directories` command learned to set the
+  :prop_tgt:`INTERFACE_INCLUDE_DIRECTORIES` property on
+  :ref:`Imported Targets`.
+
+* The :command:`target_sources` command learned to set the
+  :prop_tgt:`INTERFACE_SOURCES` property on :ref:`Imported Targets`.
+
+* The :command:`target_link_libraries` command learned to set the
+  :prop_tgt:`INTERFACE_LINK_LIBRARIES` property on :ref:`Imported Targets`.
+
+* :ref:`Alias Targets` may now alias :ref:`Imported Targets` that are
+  created with the ``GLOBAL`` option to :command:`add_library`.
+
+* The :module:`GenerateExportHeader` module learned an optional
+  ``INCLUDE_GUARD_NAME`` parameter to change the name of the include guard
+  symbol written to the generated export header.
+  Additionally, it now adds a comment after the closing ``#endif`` on the
+  generated export header's include guard.
+
+* A :variable:`CMAKE_GENERATOR_INSTANCE` variable was introduced
+  to hold the selected instance of the generator's corresponding
+  native tools if multiple are available.  This is used by the
+  :generator:`Visual Studio 15 2017` generator to hold the
+  selected instance of Visual Studio persistently.
+
+* Added new target-property :prop_tgt:`IMPORTED_GLOBAL` which
+  indicates if an :ref:`IMPORTED target <Imported Targets>` is
+  globally visible.
+  It will be set automatically if such an imported target is
+  created with the ``GLOBAL`` flag.
+
+* Additionally, it is now also possible to promote a local imported
+  target to become globally visible by setting its
+  :prop_tgt:`IMPORTED_GLOBAL` property to `TRUE`. (However, this
+  promotion can only succeed if it is done from within the same
+  directory where the imported target was created in the first
+  place.) Setting it to `FALSE` is not supported!
+
+* The minimum deployment target set in the
+  :variable:`CMAKE_OSX_DEPLOYMENT_TARGET` variable used to be only
+  applied for macOS regardless of the selected SDK.  It is now properly
+  set for the target platform selected by :variable:`CMAKE_OSX_SYSROOT`.
+
+  If for example the sysroot variable specifies an iOS SDK then the
+  value in ``CMAKE_OSX_DEPLOYMENT_TARGET`` is interpreted as minimum
+  iOS version.
+
+* The ``KDevelop3`` generator has been removed.
+
+* The :prop_sf:`COMPILE_DEFINITIONS` source file property learned to support
+  :manual:`generator expressions <cmake-generator-expressions(7)>`.
+
+* Source file learns new properties:
+
+  * A :prop_sf:`COMPILE_OPTIONS` source file property was added to manage list
+    of options to pass to the compiler.
+
+  * An :prop_sf:`INCLUDE_DIRECTORIES` source file property was added to specify
+    list of preprocessor include file search directories.
+
+* TI C/C++ compilers are now supported by the :generator:`Ninja` generator.
+
+* | The command add_jar from :module:`UseJava` module learns how to generate native
+    headers files using option -h of javac tool.
+  | This capability requires, at least, version 1.8 of Javac tool.
+  | Command create_javah will no longer be supported due to the
+    `suppression of javah tool <http://openjdk.java.net/jeps/313>`_ in the version 1.10
+    of the JDK, so ``add_jar(GENERATE_NATIVE_HEADERS)`` must be used instead.
+
+* Source file properties :prop_sf:`VS_SHADER_DISABLE_OPTIMIZATIONS` and
+  :prop_sf:`VS_SHADER_ENABLE_DEBUG` have been added to specify more
+  details of ``.hlsl`` sources with :ref:`Visual Studio Generators`.
+
+* ``INTERFACE`` libraries may now have custom properties set on them if they
+  start with either an underscore (``_``) or a lowercase ASCII character. The
+  original intention was to only allow properties which made sense for
+  ``INTERFACE`` libraries, but it also blocked usage of custom properties.
+
+* The :command:`write_basic_package_version_file` understands a new
+  ``SameMinorVersion`` option for the ``COMPATIBILITY`` argument.
+
+* The :generator:`Xcode` generator behavior of generating one project
+  file per :command:`project()` command could now be controlled with the
+  :variable:`CMAKE_XCODE_GENERATE_TOP_LEVEL_PROJECT_ONLY` variable.
+  This could be useful to speed up the CMake generation step for
+  large projects and to work-around a bug in the ``ZERO_CHECK`` logic.