Opt5: MVC: ValueProviderFactoryCollection.GetValueProvider: Avoid Linq.
Opt7: Expand performance sensitive uses of Select and FirstOrDefault.
Opt9: Improve speed of sorting and duplicate removal for FilterInfo.
Opt10: Faster ToDictionary implementation.
Opt18: WebPageRoute: Eliminate some string allocations.
Opt34: MVC: AsyncResultWrapper: Avoid delegate allocations from Begin calls.