Use CMake configuration to detect ATL support (issue #1328).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1888 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Windows: Fix reporting of WM_MOUSELEAVE coordinates by the cefclient OSR example (issue #1133).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1890 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Linux: Fix drag&drop in windows with zero or more parents (issue #1258).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1893 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
Fix configuration of the User-Agent string during startup (issue #1275).

git-svn-id: http://chromiumembedded.googlecode.com/svn/trunk/cef3@1896 5089003a-bbd8-11dd-ad1f-f1f9622dbc98