libzahl - big integer library

http://git.suckless.org/libzahl/tree/
The rationale for its creation can be found on the README file.
What do you think?

>>75
I'll be adding manpages and more documentation, but that's probably a month off. The library isn't quite ready for use just yet. If I didn't have a day job, I'd have it done by now. Instead, I'm plugging along at a slow and steady guacman pace.

z: integer functions, the 'z' comes from the symbol ℤ (zahlen) used for the set of integers
p: low-level SIMD packet oriented functions that operate on natural numbers