un-fucked cmake config for mac.

git-svn-id: http://svn.synergy-foss.org/trunk@1949 33c40d52-04ba-11de-a43f-ff96a2b7a9af
removed not impl exception, not very helpful and causes crash on linux (gets called even though drag/drop not enabled).

git-svn-id: http://svn.synergy-foss.org/trunk@1950 33c40d52-04ba-11de-a43f-ff96a2b7a9af
fixed: linux client crashes on file drop, even though drag and drop is disabled

git-svn-id: http://svn.synergy-foss.org/trunk@1951 33c40d52-04ba-11de-a43f-ff96a2b7a9af