Bump monomac to get fix for missing MonoMac_Disposer:.ctor

And since monomac depends on maccore, bump maccore too.
Bump xwt here to keep in sync with the other checkout
Merge pull request #237 from ludvichzme/master

MonoDevelop.Aspnet.Mvc minor fixes
[Core] Use Try* variant when setting TaskCompletionSource in FileService. Fix #9130.

The problem was uncovered because of MD recent Welcome Page problems.
Add R# sln settings
[WebReferences] Fix bad css
VS likes GUIDs in sln files to be uppercase
Upgrade sln to VS 2012
[Core] Support (Base)IntermediateOutputPath MSBuild property
fix a Typo in ProjectConfiguration.cs
Fixed 'Bug 9026 - Completion shows inaccesible members'.
Fixed 'Bug 9107 - Keywords use wrong color inside conditionals'.
[TextEditor] Fixed possible null reference exception.
Fixed 'Bug 9084 - EventArgs snipped available in invalid context
generates invalid code '.
Fixed 'Bug 8880 - Wrong completion tooltip for value types'.
Fixed 'Bug 9117 - [3.0.5] C#: Implementing interfaces inheriting from other interfaces'.
Fixed 'Bug 9166 - C# code formatting white space between empty parenthesis doesn't appear to be working'.
Fixed 'Bug 8896 - Strange "jump" behaviour when clicking on a search
result, which makes the cursor go to the wrong location'.
Fixed 'Bug 9115 - Code completion fumbles on named lambda parameters.'.
Fixed 'Bug 9156 - Assembly browser takes a while to open'.