Use Xwt Image instead of Pixbuf in StatusIcon
More Image/Pixbuf changes
More changes to support retina icons
More Pixbuf/Image replacements
Add ImageView class
Conflicts:
	main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.csproj
More changes to support retina icons
Pixbuf -> Xwt Image
More Pixbuf -> Xwt Image
[Shell] Fix close button drawing issue
Fix issues caused by Pixbuf->Xwt.Image migration
Track api changes
Merge remote-tracking branch 'origin/master' into retina2

Conflicts:
	main/src/addins/GnomePlatform/GnomePlatform.csproj
	main/src/addins/VersionControl/MonoDevelop.VersionControl/MonoDevelop.VersionControl.Views/LogWidget.cs
	main/src/addins/VersionControl/MonoDevelop.VersionControl/MonoDevelop.VersionControl/VersionControlNodeExtension.cs
	main/src/addins/VersionControl/MonoDevelop.VersionControl/MonoDevelop.VersionControl/VersionControlService.cs
	main/src/core/MonoDevelop.Ide/MonoDevelop.Components.Docking/DockBarItem.cs
	main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.CodeCompletion/ListWindow.cs
	main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.csproj