Shrimp Shader Generator FLTK2 GUI (SVN)

Added a new default (dark) theme, flat/border-boxxed.

Changed the UI a bit, added widgets for normal, point, matrix types. Tweaked existing string and color type widgets. Changed colors for blocks, and shape and colors for groups.

No more warnings on vex_include and vex_code parsing in shading blocks

Fixed headers inclusion that shrimp generated from rib_root_block, it was using <>, not quotes (thanks Matthieu).

Added example network illustrating conversion of normals to a RGB tangent space normal map.

Fixed light shader headers (accessing Cl and Ol outside solar and illuminate constructs, although the specs only mention L being exclusively accessible inside solar and illuminate constructs).
Fixed storage class of samples, bias and filter width of light blocks.

Updated remaining example files.

Updated examples for the tweaked blocks. 2 examples missing still.

Added Displacement "null" to the box geometry in the preview ribs. This will most likely be replaced later, with separate context shaders for each piece of geometry (and ReadArchives). The rib files need a cleanup.

Updated header.