[PATCH] PR13236 - Microsoft compatibility: support __super specifier to access members of base classes

[Nikola Smiljanić]

Done in r218484. Thanks for the review and all suggestions.

Last patch was not the final version, but something I uploaded by mistake. I've allowed use from static members, added lambda diagnostic and moved test to a separate file. The only thing left would be to improve error recovery, I'll check this when I get the time.

http://reviews.llvm.org/D4468