Merge pull request #53 from Psychtoolbox-3/master

Resync with current master of official Psychtoolbox-3 repo. v3.0.12-SP5
Add intel 2.99.917 ddx without triplebuffering for XOrg 1.16 64-Bit.

A variant for XOrg 1.16 on x86_64 for Ubuntu 14.10. Again, a
DRI2 only build with TripleBuffer off by default, so we can
be certain this will do the right thing.

-> intel_drv.so_64BitForXOrg1-16-eg-Ubuntu14.10 with the new driver binary.
-> Documentation files updated.
-> No need for nouveau ddx, as 14.10 already ships a good 1.0.11 ddx.
Merge pull request #226 from kleinerm/master

Pull for small beta update.
A customized intel 2.99.917 ddx with DRI2 only and triplebuffer off for Xorg 1.16 64-Bit. (Ubuntu 14.10)