Disable cms-colord from Weston for now, it hangs Weston on screen swapping

git-svn-id: https://rebeccablackos.svn.sourceforge.net/svnroot/rebeccablackos@3109 56e3d1a8-0179-4092-b3e2-9fbbcda0c0a9
Due to issues on i915 and apparently other systems, always fall back to forcing software cursors for now in Weston. pq informed me of this variable in Weston to do so

git-svn-id: https://rebeccablackos.svn.sourceforge.net/svnroot/rebeccablackos@3110 56e3d1a8-0179-4092-b3e2-9fbbcda0c0a9