gtk embedding in NSView.
Add a simple API to determine if we support NSView embedding.
Disable ligatures in Pango. Using the CoreText backend we can't visually move the caret
position inside ligatures, so the caret position gets offset when you try to key around
inside a GtkEntry that contains any ligatures, e.g. "fluid" has "fl" ligature so the
caret is offset by 1.

https://bugzilla.xamarin.com/show_bug.cgi?id=15787
Merge pull request #7 from ranma42/fix-config-paths

Update mono config generation to match config path fixes in mono/mono#1064
Merge branch 'embedding'
Add property to control swizzle draw rect.
Merge branch 'master' into alexischr-mono-mac-64-package