I've modified the GDM configuration section to work correctly. I have also ensured...

I've modified the GDM configuration section to work correctly.  I have also ensured that xdm is no longer started just because livecd/xdm is used, which was causing issues for the generic-livecd type.  This is 2.0_rc50, which should be the last of the 'release candidates' made.  If there are no bug reports in 2 days, then I'm rolling this as 2.0 final.

git-svn-id: svn+ssh://svn.gentoo.org/var/svnroot/catalyst/trunk@1161 d1e1f19c-881f-0410-ab34-b69fee027534