refactored logging for synwinxt, and added version number.

git-svn-id: http://svn.synergy-foss.org/trunk@1996 33c40d52-04ba-11de-a43f-ff96a2b7a9af
changed installer from nsis to wix - attempting to fix "synwinxt.dll in use" error on upgrade.

git-svn-id: http://svn.synergy-foss.org/trunk@1997 33c40d52-04ba-11de-a43f-ff96a2b7a9af
moved .msi to original installer output location

git-svn-id: http://svn.synergy-foss.org/trunk@1998 33c40d52-04ba-11de-a43f-ff96a2b7a9af