Implement support for anonymous structs and unions in C. Both C and
C++ handle anonymous structs/unions in the same way. Addresses several
bugs:

  <rdar://problem/6259534>
  <rdar://problem/6481130>
  <rdar://problem/6483159>

The test case in PR clang/1750 now passes with -fsyntax-only, but
CodeGen for inline assembler still fails.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62112 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed