[PATCH] Implement CWG496: Is a volatile-qualified type really a POD?

[Agustín Bergé]

Addressed review comments. Added test for the newly introduced diagnostic.

CodeGenCXX/no-opt-volatile-memcpy.cpp still fails. I tried checking for the absence of `@llvm.memcpy`, but the non-volatile array member of the `struct` is still `memcpy`-ed (good!). I have little to no experience with codegen tests, let alone llvm ir, I could use some help to adjust the offending test case.


http://reviews.llvm.org/D7060

Files:
  include/clang/Basic/DiagnosticSemaKinds.td
  lib/AST/DeclCXX.cpp
  lib/Sema/SemaDeclCXX.cpp
  test/CXX/class/class.union/p1.cpp
  test/CXX/drs/dr4xx.cpp
  test/SemaCXX/type-traits.cpp

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