Pull in internal.h (for config.h) from bitpack.h.
Pull in internal.h (for config.h) from bitpack.h.

This is needed to get OC_ARM_ASM, so the C bitpacking routines don't get used
 during header parsing.

svn path=/trunk/theora/; revision=17503

brion/theora,brion/theora,brion/theora,brion/theora,brion/theora