Removing a FIXME from the attribute parsing code by now passing along the scope and syntax information for attributes with custom parsing. It turns out not to matter too much because the FIXME wasn't quite true -- none of these attributes have a C++11 spelling. However, it's still a good change (for instance, we may add an attribute with a type arg in the future for which this code now behaves properly).

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@213191 91177308-0d34-0410-b5e6-96231b3b80d8
Objective-C. Modify text of documentation for objc_runtime_name
attribute.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@213192 91177308-0d34-0410-b5e6-96231b3b80d8
Specifying the diagnostic argument through the attribute table generator instead of having to enter it manually as part of the attribute subject list. This only affects attributes appertaining to ObjC interfaces and protocols.

No new tests required as this is covered by existing tests.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@213193 91177308-0d34-0410-b5e6-96231b3b80d8