Re: xorg 7.1 under x86_64 status ?
It should be the same as the normal (as in i386) X.org 7.1 hack.
Just disable RenderAccel (Option "RenderAccel" "false") and your fonts should be fine.
EDIT: The next driver release -should- be compatible with 7.1, and with a little bit of luck, it should include full AiGLX support. (FC6, here I come!)
DEV-NG: Intel S2600C0, 2xE52658V2, 32GB, 4x2TB, GTX680, F19/x86_64, Dell U2711.
DEV: Intel S5520SC, 2xX5680, 36GB, 5x320GB, GTX550, F19/x86_64, Dell U2711 (^).
SRV: Tyan Tempest i5400XT, 2xE5335, 8GB, 4x2TB, 9800GTX, F19/x86-64, Dell U2412.
LAP: ASUS N56VJ, i7-3630QM, 16GB, 1TB, 635M, F19/x86_64.