Make --help-* options available from all command-line tools

Make the standard --help-* options available from all command-line
tools.  Drop options that are no longer supported:

  --copyright, --help-full, --help-html, --help-man,
  --help-compatcommands, --help-custom-modules

De-duplicate Help/manual/*.1.rst help options by using an
OPTIONS_HELP.txt file included from each manual.

1 files changed, 1 insertions, 73 deletions

diff --git a/Help/manual/cpack.1.rst b/Help/manual/cpack.1.rst
index 707c174..5c6567c 100644
--- a/Help/manual/cpack.1.rst
+++ b/Help/manual/cpack.1.rst
@@ -75,79 +75,7 @@ native tool on their platform.
   If vendor is not specified on cpack command line (or inside
   CMakeLists.txt) thenCPack.cmake defines it with a default value
 
-* ``--help-command cmd [file]``: Print help for a single command and exit.
-
-  Full documentation specific to the given command is displayed.  If a
-  file is specified, the documentation is written into and the output
-  format is determined depending on the filename suffix.  Supported
-  are man page, HTML, DocBook and plain text.
-
-* ``--help-command-list [file]``: List available commands and exit.
-
-  The list contains all commands for which help may be obtained by
-  using the --help-command argument followed by a command name.  If a
-  file is specified, the documentation is written into and the output
-  format is determined depending on the filename suffix.  Supported
-  are man page, HTML, DocBook and plain text.
-
-* ``--help-commands [file]``: Print help for all commands and exit.
-
-  Full documentation specific for all current command is displayed.If
-  a file is specified, the documentation is written into and the
-  output format is determined depending on the filename suffix.
-  Supported are man page, HTML, DocBook and plain text.
-
-* ``--help-variable var [file]``: Print help for a single variable and exit.
-
-  Full documentation specific to the given variable is displayed.If a
-  file is specified, the documentation is written into and the output
-  format is determined depending on the filename suffix.  Supported
-  are man page, HTML, DocBook and plain text.
-
-* ``--help-variable-list [file]``: List documented variables and exit.
-
-  The list contains all variables for which help may be obtained by
-  using the --help-variable argument followed by a variable name.  If
-  a file is specified, the help is written into it.If a file is
-  specified, the documentation is written into and the output format
-  is determined depending on the filename suffix.  Supported are man
-  page, HTML, DocBook and plain text.
-
-* ``--help-variables [file]``: Print help for all variables and exit.
-
-  Full documentation for all variables is displayed.If a file is
-  specified, the documentation is written into and the output format
-  is determined depending on the filename suffix.  Supported are man
-  page, HTML, DocBook and plain text.
-
-* ``--copyright [file]``: Print the CMake copyright and exit.
-
-  If a file is specified, the copyright is written into it.
-
-* ``--help,-help,-usage,-h,-H,/?``: Print usage information and exit.
-
-  Usage describes the basic command line interface and its options.
-
-* ``--help-full [file]``: Print full help and exit.
-
-  Full help displays most of the documentation provided by the UNIX
-  man page.  It is provided for use on non-UNIX platforms, but is also
-  convenient if the man page is not installed.  If a file is
-  specified, the help is written into it.
-
-* ``--help-html [file]``: Print full help in HTML format.
-
-  This option is used by CMake authors to help produce web pages.  If
-  a file is specified, the help is written into it.
-
-* ``--help-man [file]``: Print full help as a UNIX man page and exit.
-
-  This option is used by the cmake build to generate the UNIX man
-  page.  If a file is specified, the help is written into it.
-
-* ``--version,-version,/V [file]``: Show program name/version banner and exit.
-
-  If a file is specified, the version is written into it.
+.. include:: OPTIONS_HELP.txt
 
 See Also
 ========