cmake: Add -W options to control deprecation warnings and errors

Refactor the -Wdev and -Wno-dev to use a generic -W parser that follows
the GCC pattern.  Include support for setting CMAKE_ERROR_DEPRECATED and
CMAKE_WARN_DEPRECATED via the deprecated warning.  Add -Werror=dev and
-Wno-error=dev options so that dev warning options are in line with
deprecated warning options.  Use a new CMAKE_SUPPRESS_DEVELOPER_ERRORS
internal cache entry to store the above new dev options persistently.
Add tests for new options and updated cmake documentation and release
notes to list new options.

1 files changed, 13 insertions, 1 deletions

diff --git a/Source/cmMessageCommand.cxx b/Source/cmMessageCommand.cxx
index 2854a82..e09ba75 100644
--- a/Source/cmMessageCommand.cxx
+++ b/Source/cmMessageCommand.cxx
@@ -43,7 +43,19 @@ bool cmMessageCommand
     }
   else if (*i == "AUTHOR_WARNING")
     {
-    type = cmake::AUTHOR_WARNING;
+    if (!this->Makefile->IsOn("CMAKE_SUPPRESS_DEVELOPER_ERRORS"))
+      {
+      fatal = true;
+      type = cmake::AUTHOR_ERROR;
+      }
+    else if (!this->Makefile->IsOn("CMAKE_SUPPRESS_DEVELOPER_WARNINGS"))
+      {
+      type = cmake::AUTHOR_WARNING;
+      }
+    else
+      {
+      return true;
+      }
     ++i;
     }
   else if (*i == "STATUS")