[PATCH] [libcxx] type_info support for MSVC

[David Majnemer]

================
Comment at: include/typeinfo:164-165
@@ +163,4 @@
+    _LIBCPP_INLINE_VISIBILITY
+    const char* name() const _NOEXCEPT
+        {return __type_name;}
+
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This name isn't demangled.  We can't call `UnDecorateSymbolName`, it's only available if dbghelp.dll is present.

Perhaps libc++abi should have a demangler?

http://reviews.llvm.org/D5133