[xscreensaver/f17] (16 commits) ...Merge remote-tracking branch 'origin/master' into f17

[Mamoru Tasaka]

Summary of changes:

  f1fb391... Update to 5.15 (*)
  867ec08... Remove newline from xscreensaver-getimage-file result in we (*)
  b7e4457... Make vidwhacker work correctly when xscreensaver-getimage-f (*)
  af58ac8... Fix segv when quitting hack with -pair option (bug 819349) (*)
  787b870... Update to 5.16 (*)
  8bd8c69... Update to 5.17 (*)
  81569dd... Don't call ctime in blurb in signal hander, patch by jwz (*)
  cf57726... Update to 5.18 (*)
  bd63ec5... Fix -verbose option usage in widwhacker as written in usage (*)
  d07ee66... Update to 5.19 (*)
  44de100... Fix segv on lament with -wireframe option (bug 849961) (*)
  f1ffaa9... More fix on bug 849961 (lament -no-texture) (*)
  08cb06d... fix merge conflict (*)
  e193be7... Merge remote-tracking branch 'origin/master' into f16 (*)
  6ce8f65... Merge remote-tracking branch 'origin/master' into f16 (*)
  10d4c86... Merge remote-tracking branch 'origin/master' into f17

(*) This commit already existed in another branch; no separate mail sent