Add revit version variable to release build too.
Update RTF reference.
Merge remote-tracking branch 'origin/master' into RevitSubFolders

Conflicts:
	test/Libraries/Revit/DynamoRevitTests/BugTests.cs
Merge remote-tracking branch 'origin/RevitSubFolders' into Revit2015

Conflicts:
	extern/RevitTestFramework/RevitTestFramework.dll
	src/Config/CS.props
	test/Libraries/Revit/DynamoRevitTests/ModelCurveTests.cs
	test/Libraries/Revit/DynamoRevitTests/SampleTests.cs
	test/Libraries/Revit/DynamoRevitTests/SolidTests.cs
	test/Libraries/Revit/DynamoRevitTests/TransformTest.cs