Add comment for %MSBuild% setting
- CR follow-up
Fix 1407, combine blank option and option label in EDDL()
- https://aspnetwebstack.codeplex.com/workitem/1407
- "EDDL() shows extra blank option in addition to option label"
- Special-case in EDDL(); don't pass option label to helper methods
- Add tests for these situations
- Add tests using an empty enum