Windows installer requires no admin rights

Now when installing on Windows, no admin rights are necessary.  Buildify
will be installed to %APPDATA%\buildify and it will be appended to the
user path variable.  It is possible that compatibility of editing the
user path variable with Windows XP was lost, but I have no idea and
cannot test it.  Nor would I ever want to touch XP anyway.
Can we use touch instead of echo redirect?

I like using touch better than redirecting the echoing of nothing.  It
seems more real in my opinion.  Also, I removed LIBS="$LIBS" because we
don't need it right now by any means.