[build] Bump md-addins for xwt
Flush csproj fixes
Remove MD1 project format
Fixed 'Bug 16375 - ASP.Net support has regressed'.
Fixed 'Bug 16383 - Regression: Find Next does not work after switching
to a different document'.
Bump nrefactory/fixed allman indentation issue.
bumped md-addins
Bug 7720 - New project's Solution name always validated
Add support for local-copying package references

When not explicitly set, the default value of LocalCopy depends on the type
of reference. For project and file references the default is true. For
framework and package assemblies (including GAC) the default is false.
Bug 7155 - Add new Solution Folder

In case the project is under version control, if we add an empty
SolutionFolder item, we do a tree rebuild, which cancels the name
editing action.
[SourceEditor] Fixed potential null reference exception.
Fixed 'Bug 16411 - Xamarin Studio Error
pop-up:TargetInvocationException'.
Fixed 'Bug 16414 - Code Inspection listed multiple times'
Bug 14332 - The "Use MSBuild build engine" should be in the Build section
Fixed 'Bug 16415 - Formatter - Copy paste comments'
Bump nrefactory.
Merge pull request #441 from mono/bug7155

Bug 7155 - Add new Solution Folder
Merge pull request #446 from mono/bug14332

Bug 14332 - The "Use MSBuild build engine" should be in the Build sectio...
Replaced the hackfix for MSBuildCombine with proper fix
Bug 7595 - When opening a file, display path relative to solution directory