math: Precompute the fast log2/pow2 lookup tables
Since these pages now end up in .rodata this will reduce system memory usage by about 256k for each GL process past the first.
Remove util_init_math() since it's now useless.
Signed-off-by: Adam Jackson firstname.lastname@example.org
I'm not sure if this is a net win. I think it is, but something like Windows' quad-fat binaries might not appreciate it.