8165163: Solaris11 and onwards provide CUPS by default, references to csw and sfw versions should be removed
Reviewed-by: erikj

8146639: Fix detection of Cups headers during configuration
Reviewed-by: erikj

8140762: Specifying --without-LIB if not needed should not result in warning
Reviewed-by: erikj

8138761: Improved handling of libffi, and cleanup of libraries.m4
Reviewed-by: erikj