Most of these fixes are simple symbol shadowing issues, like index and the
braindead y0 and y1 extern symbols exported by math.h on GNU libc systems.
There is a masking issue in ClutterTexture which should be checked; I ran
the tests and everything looked fine.
The rest are just unused variables.
* clutter/clutter-behaviour-bspline.c: Kill off some deep pointer
indirections; use CLUTTER_NOTE() instead of ifdeffed out g_debug();
add checks in every public entry point; move some initialisations
of private data structures out of the constructor and into the
init function, where they belong.
