Use triples that match the -target-abi option.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@197522 91177308-0d34-0410-b5e6-96231b3b80d8
None of these attributes currently make use of an AST node, so setting ASTNode = 0 to reduce complexity. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@197525 91177308-0d34-0410-b5e6-96231b3b80d8