Log Message:
CVE-2017-10971 and CVE-2017-10972: apply fixes to the event loop from

   \ 
https://cgit.freedesktop.org/xorg/xserver/commit/?id=ba336b24052122b136486961c82deac76bbde455
   \ 
https://cgit.freedesktop.org/xorg/xserver/commit/?id=8caed4df36b1f802b4992edcfd282cbeeec35d9d
   \ 
https://cgit.freedesktop.org/xorg/xserver/commit/?id=215f894965df5fb0bb45b107d84524e700d2073c
   \ 
https://cgit.freedesktop.org/xorg/xserver/commit/?id=05442de962d3dc624f79fc1a00eca3ffc5489ced

via xsrc patch from mrg@ at

https://mail-index.netbsd.org/source-changes/2017/07/07/msg086134.html

Bump PKGREVISION.