ref: 1c82ddb6bf18c515c840f4430913cba4ab7915e9
parent: 2433bad34328371645a8c869c71d2c2cc9b46d72
author: Konstantinn Bonnet <qu7uux@gmail.com>
date: Tue Feb 17 06:37:27 EST 2015
reduce redundant syscalls a bit - in_9: don't center mouse unless mouse moved - vid: draw (everything) once per VID_Update call, group some instructions