Start testing some commented-out cases of badly-formed __has_include.

Filed PR13334 for the cases that cause the compiler to crash, and
PR13335 for the cases where we should be recovering more gracefully.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160070 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed