Log Message:
Update to 4.13:
4.13
* On Xinerama systems, xscreensaver now runs one hack on each
  monitor (just like in ``real'' multi-head mode) instead of running
  one hack stretching across all the screens. Note that for this to
  work with any 3rd party screensavers, they must update their
  ``vroot.h'' file.
* webcollage and vidwhacker display images using xscreensaver-getimage now.
* Added ljlatest script for use with starwars and phosphor.
4.12
* New GL hacks, flipflop, antspotlight, and polytopes.
* Added VMS to bsod.
* Compile without warnings in ``gcc -pedantic''.
* Updates to webcollage and queens.
* Fixed a bug that could cause PAM to hang.