Added "universal_newlines" to Popen to fix issue with cscope in Cygwin environment.

With a Windows version of Sublime and a Cygwin installation of cscope, only the first result was being returned
because of line-ending expectations of the plugin. Adding universal_newlines to Popen allows for any type of line
ending. The encoding of stdout and stderr will be dictacted by locale.getpreferredencoding(False).