support for qt 5.2

git-svn-id: http://svn.synergy-foss.org/trunk@1963 33c40d52-04ba-11de-a43f-ff96a2b7a9af
fixed: dist needs to know mac sdk used

git-svn-id: http://svn.synergy-foss.org/trunk@1964 33c40d52-04ba-11de-a43f-ff96a2b7a9af
fixed: distftp needs to know mac sdk used

git-svn-id: http://svn.synergy-foss.org/trunk@1965 33c40d52-04ba-11de-a43f-ff96a2b7a9af
fixed: reset does not remove all generated qt 4.3 files

git-svn-id: http://svn.synergy-foss.org/trunk@1966 33c40d52-04ba-11de-a43f-ff96a2b7a9af