KWSys 2014-05-19 (c282e64f)

Extract upstream KWSys using the following shell commands.

$ git archive --prefix=upstream-kwsys/ c282e64f | tar x
$ git shortlog --no-merges --abbrev=8 --format='%h %s' 6074f33f..c282e64f
Brad King (2):
      2e00d252 SystemTools: Port cygwin path conversion to modern API
      c282e64f Process: Workaround child kill trouble on Cygwin

Change-Id: I39a3ca47fbb4065eff922d94e6d7019c417ed75c