Fix broken tests; finally pass on both x86 and x86_64 at the same time!

* Use proper XFAIL directives
* Fix busted lit.cfg missing target_triple configuration
  (the other lit.cfg's in this project contain this)

Also, apparently fix some trailing whitespace
thanks to some magic in my workflow.

git-svn-id: http://llvm.org/svn/llvm-project/safecode/trunk@190615 91177308-0d34-0410-b5e6-96231b3b80d8