Blender Git Loki

NLA SoC: FModifier drawing converted to use Layout Engine

* Most of the F-Modifiers have been ported to use the layout engine + RNA for drawing their buttons now. This plays much nicer with various button-layouts.
--> As a nice demo, try adding a Noise Modifier to a NLA-strip, and change the 'size' setting to about 2 to see some effects.

* Generator and Envelope modifiers haven't been ported yet since they're quite complex (requiring more time + energy), and as such, have been made to have some temporary error prints instead. Will check on this tomorrow.

* Finished/cleaned up the RNA-wrapping of most FModifiers.


TODO's (help requested... Brecht?):
Generator modifier's UI cannot be wrapped yet using the layout engine (though I might try using the old system only), as I'm having some trouble wrapping the coefficients array for this (see rna_fcurve.c - rna_def_fmodifier_generator())