KWSys 2015-05-12 (b1d560a0)

Extract upstream KWSys using the following shell commands.

$ git archive --prefix=upstream-kwsys/ b1d560a0 | tar x
$ git shortlog --no-merges --abbrev=8 --format='%h %s' 4f39791b..b1d560a0
Brad King (4):
      c2387a4b DynamicLoader: Fix CloseLibrary for failed OpenLibrary on HP-UX
      8c8b2273 Process: Refactor child pipe creation
      34fceb50 Process: Add option to merge stdout/stderr
      b1d560a0 CPU: MIPS is biendian