[PATCH] Make a few tables constant
The attached patch makes a few table constants, moving up to 2664 (for libtheora built with encoder) bytes from .data to .rodata.
Unfortunately the improvement here is mostly theorical, for shared object, as there are 1216 bytes (for 64-bit systems) in .data.rel.ro.local caused by function pointers and TH_VP31_QUANT_INFO table. Those can be mitigated by a working prelink, so it's still useful to apply this patch.