Updated msbuild community tasks to unmodified release version.
Changed "core" libraries to be be automatically versioned along with all of the other libraries.
Changed the SrcML Service project to set "DeployExtension" to true and modified the MSBuild project file to set it to false so that developers can build SrcML Service and get the right thing and the build machine will get the right thing.
Moved the versioning msbuild scripts to a new file and expanded upon them to use git-describe to automatically generate the version numbers.
Updated MethodCallSurvey project to use the global SolutionInfo for versioning.
Fixed errors in Version.targets.