Use add-in attributes to define dependencies in C and C# addins
Bump mono-addins
Remove hardcoded add-in versions
[CorDebug] Move as much code as possible into extension classes.
[CorDebug] Fix Call Stack tree.
[CorDebug] Implemented Custom Attributes for methods and stub code for DebuggerHidden.
[CorDebug] First attempt at fixing up evaluation.

Interfaces don't work yet. And class typing is screwed.
[CorDebug] Implement reading of interfaces.
[CorDebug] Removed a hackfix and removed duplicate member enumeration.
[Cordebug] Fix issues with interface listing. Also cache GetType queries.
[CorDebug] Implemented isCompilerGenerated check for Type Display Data.
[CorDebug] Implement single getfield and fixed issue with properties whenever getter/setter was missing.
[CorDebug] Hoisted reference support.
[CorDebug] Update readme.
Enabled debugger tests on my branch
Merge branch 'master' into deps-in-attributes

Conflicts:
	main/external/mono-addins
	main/src/addins/CBinding/CBinding.addin.xml
	main/src/addins/CSharpBinding/CSharpBinding.addin.xml
	main/src/addins/Deployment/MonoDevelop.Deployment.Linux/MonoDevelop.Deployment.Linux.addin.xml
	main/src/addins/Deployment/MonoDevelop.Deployment/MonoDevelop.Deployment.addin.xml
	main/src/addins/Deployment/MonoDevelop.Deployment/MonoDevelop.Deployment.csproj
	main/src/addins/MonoDevelop.Debugger.Soft/MonoDevelop.Debugger.Soft.AspNet/Manifest.addin.xml
	main/src/addins/MonoDevelop.Debugger.Soft/MonoDevelop.Debugger.Soft/Manifest.addin.xml
	main/src/addins/MonoDevelop.Debugger.Win32/MonoDevelop.Debugger.Win32/MonoDevelop.Debugger.Win32.addin.xml
	main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger.addin.xml
	main/src/addins/MonoDevelop.GtkCore/MonoDevelop.GtkCore.addin.xml
	main/src/addins/MonoDevelop.XmlEditor/MonoDevelop.XmlEditor.addin.xml
	main/src/addins/MonoDeveloperExtensions/MonoDeveloperExtensions.addin.xml
	main/src/addins/NUnit/MonoDevelopNUnit.addin.xml
More hardcoded add-in version removal
[Core] Add support for project unloading
[Ide] Implemented project unload command
[Core] Don't generate xml docs for MD.Project.Formats.MSBuild