[RFC] Which Documentation tool(s) to standardize on for Xorg?

[Shawn Starr]

Everyone knows about it, most people hate doing it... Documentation!!

I'd like to help by starting to document the Xlibs APIs in a nice format for 
easy access, of the two mentioned so far are gtk-doc and doxygen.

I'd like to come to a consensus with people on here about which one we should 
use. If you have any other ones not mentioned please let us know. 

Thanks, 

Shawn.