[xammac-2.0] initial port of MacPlatform to Xamarin.Mac 2.0
[Mac] Fix the build
Clean up solution configurations
Flush project file changes
[xwt] Use xamarin-mac branch
[Mac] Don't try to bundle MonoMac.dll
MacPlatform: dlopen libxammac.dylib
Merge branch 'xammac-2.0' of github.com:xamarin/monodevelop into xammac-2.0

Conflicts:
	.gitmodules
Fix md-addins reference
Updated reference to xwt
Updated reference to md-addins
Merge remote-tracking branch 'mono/master' into xammac-2.0

Conflicts:
	main/Main.sln
	version-checks
[Ide] MonoMac->XamMac changes
Updated reference to xwt
Updated reference to md-addins
Merge branch 'master' into xammac-2.0

Conflicts:
	main/external/xwt
	version-checks
Use 4.5 framework in core and addins

Shared libraries can still use older frameworks.
[Mac] Clean up remaining System.Drawing use
Fix build
[xwt] Bump for native embedding fix