Point Cygwin download to x86 version of exe (as they now have distinct 3...

...2/64 bit versions)

http://www.cygwin.com/setup.exe doesn't exist anymore as they now have distinct 32-bit and 64-bit versions

The paths are now:
  * http://www.cygwin.com/setup-x86.exe
  * http://www.cygwin.com/setup-x86_64.exe

Choosing the old 32-bit package for now as the 64-bit is not yet fully package complete and has some bugs from my experience.