Cleaning up doc warnings.
Implemented DataArchive.FindMethodCalls()
Merge branch 'topic-data-incrementalupdate' of https://github.com/abb-iss/SrcML.NET into topic-data-incrementalupdate

Conflicts:
	ABB.SrcML.Data/MethodCall.cs
	ABB.SrcML.Data/Scope.cs
Merge branch 'topic-data-incrementalupdate' of https://github.com/abb-iss/SrcML.NET into topic-data-incrementalupdate