Revision 1309953

More work on "release" target which consists of source-release and binary-release targets.  The result in the "out" directory are:
apache_flex_sdk_4_bin.zip, apache_flex_sdk_4_src.zip, compiler-api-javadocs.zip and flexTasks.zip.

Added several "FixMe"s to the build files that need to be resolved before the release.  By tradition, all "FixMe" tags (case-insensitive) have to be removed before a release and all ToDo tags (case-insensitive) can be deferred.