Shrimp Shader Generator FLTK2 GUI (SVN)

Updated storage for string type pads, updated texture block, and environment for Pixie.

Updated indirectdiffuse() and occlusion().

Updated compatibility for trace and occlusion shadeops in the different implementations.

Fixed hyperbolic tangent block, updated trace and transmission blocks to be able to deal with different renderer implementations.

Shader code constants automatically defined with integer values for the shader preprocessors

Added textureinfo() block.

RIB scene outputs the user chosen display; Shrimp compiles the surface, displacement, light and atmosphere shaders found in the template file

Added Clint Hanson and Armin Bruderlin's fur shader (siggraph2000), from The RenderMan Repository. Also added matte shader (together with grid shader, both should be placed ~/.shrimp/temp dir).

Moved the \-DRENDERER option to the shader compilation command; fixed the display choices consistency between the main window and option dialog

Improved compatibility with Aqsis and Pixie. Rtglass block needed alternative implementation of glass, since Pixie seems to have problems with binary conditionals.