Get rid of inline and const, to reduce warnings and errors. It seems compilers don't like it if you pass &(unsigned char *) to (const unsigned char **), and pyrex doesn't let you define 'const unsigned char*', (it doesn't like const at all), so for now, just remove it, because it doesn't hurt anything.
Removing inline because MSVC doesn't understand it, and causes compile failures. It wasn't really important anyway.