Removed predefines from Doxyfile since they are no longer needed with the new Python generation method.

Fixed ComplexShape::Merge and ComplexShape::Split to properly take new uvSet member of TexDesc into account.
Updated Niflib for Python readme to reflect the continuing "new_niflib" name.
Reverted NiTriBasedGeom::GetSkinInfluencedVertices function to old functionality which works as long as the NIF is valid.  Some valid NIF files were not loading with the new changes.
Updated version in Doxyfile to 0.5.8

Replaced _WRITE, _READ, _STRING, AND _FIXLINKS defines with the corresponding internal function call.
Replaced STANDARD_INTERNAL_FUNCTIONS with the internal function signatures.
Made my Doxygen config file use relative paths and added it to SVN so everyone can generate the same documentation for themselves.
Removed includes WZ added to ComplexShape.  These were not missing, they are up to the user to include if they wish.