Blender Git Loki

Added nearly full support for Blender's procedural textures, with the exception
of 'envmap', 'magic', and 'plugin' modes.
The stucci texture also is not exact match, since it cannot be fully
emulated in yafray because of implementation issues. It will work best
for low turbulence values (which is actually not taken into account
in the export code).
Also, since Blender's static noise is basically just direct random number
output, don't expect the exact same result when rendered in yafray, but in this
case that probably shouldn't be that much of a problem...
(needs yafray from cvs)

(btw, on a side note, I put this in the comments once when working on the noise
stuff for Blender, but noise is affected by the 'depth' parameter, and there
is no way to control this directly from the GUI, can only be done by temporarily
switching to 'clouds' for instance.)