Then maybe update your attached xorg.log - it says you are using an updated
kernel 3.11 and glamor 0.5.1 
Maybe the devs need this updated log.
I am just a user by the way trying to help :)

I don´t know if glamor 0.5.1 is a stable git branch... I use 0.5.99. Maybe
thats the unstable git branch.

I also got the hint to delete everything in my /usr/local/ because I had old
self-compiled mesa etc. there and that prevented the use of the up to date
versions in /usr
I think /usr/local is used first because its first in the PATH environment
variable...
So for me all worked after I deleted the stuff in /usr/local. Before I was
stuck at software rendering.