Reorder these DataLayout entries to match the order LLVM uses.

This completes the cleanup/refactoring of DataLayout on the clang side. Next
is figuring out the differences between the llvm and clang produced strings

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@197442 91177308-0d34-0410-b5e6-96231b3b80d8