From Axel:

add support for depracated options (like mathcore) so they don't fail
nightly builds, configure just issues a warning that the option is now
deprecated. configure now also issues an INFO message in case one explicitly
enables an option that is by default already enabled (and vice versa).


git-svn-id: http://root.cern.ch/svn/root/trunk@22586 27541ba8-7e3a-0410-8455-c3a389f83636