Log Message:
Update to randrproto-1.3.1. Changes:

Punctuation fix.
Clarify that GetOutputPrimary is per-screen.
Update reference to renderproto.txt
Allow inactive outputs to be set as primary
Remove trailing white space from randrproto.txt
Add XORG_DEFAULT_OPTIONS invocation in configure.ac
Bump version to 1.3.1
New properties claimed to be in version 1.4 instead of 1.3.1
Sort properties alphabetically.
Should read "EDID", not "EdidData" (2).
Add Backlight property description.