133: initial commit
libnt: remove modulo.c

I decided to solely use modulo.cpp as part of a C++ library, rather
than maintain a C version at the same time to confuse Make.
libnt: add Makefile

Wrote a Makefile to automate generation of archive.
libnt: add pwrmod

Power mod utility.
133: move to C++

I always forget that the libraries are written in C++...
133: finish