-Added MPEG play test
-Added option to run cd player
-Revised cmake so it looks for Iapetus installed locally first before retrieving from git. This may be revised yet.
-Other misc fixes

git-svn-id: https://yabause.svn.sourceforge.net/svnroot/yabause/trunk@3084 d7be59e3-070e-4b9a-85a1-4646befae34d
New TitanWriteColor function used in software OSD

This avoid direct access to the dispbuffer and
will be useful later (for instance, for High
Resolution...)

git-svn-id: https://yabause.svn.sourceforge.net/svnroot/yabause/trunk@3085 d7be59e3-070e-4b9a-85a1-4646befae34d