Convert Rage 128 over to t_vertex.c. While it's slightly slower (10% in ipers)

Convert Rage 128 over to t_vertex.c.  While it's slightly slower (10% in ipers)
it's not that big of a deal in more normal apps, and axes a good bit of code.
And I assume that t_vertex will only get faster.  Removes ~43k from compiled
binary.

Tested with:	quake3, ut, ipers, texcyl, chromium, tuxracer, neverball (kinda)