Updating the attribute declarations to have the correct syntaxes. This means...

Updating the attribute declarations to have the correct syntaxes. This means giving a __declspec spelling to: deprecated, naked, noinline, noreturn, and nothrow. uuid has no GNU spelling, so it was switched to __declspec. dllexport and dllimport both are now supported with GNU spellings.

llvm-svn: 199142