Log Message:
Update to 1.3.1. Changes since 1.3.0:

Adam Jackson (1):
      Don't store pScrn->monitor->DDC manually, let xf86SetDDCproperties do it.

Julien Cristau (1):
      Bump to 1.3.1

Paulo Cesar Pereira de Andrade (2):
      Compile warning fixes.
      Replace calls to xf86usleep with calls to usleep and include unistd.h.