Simple PLAN Implementation in C

This is a simple, naive implementation of PLAN in C. This is basically a port of PLAN_SPEC.txt.

make bsdnt/

cd bsdnt/
./configure
make        # to just build
make check  # to run tests

building

make plan

testing

make test

debugging

make plan_debug
gdb ./plan_debug
<...>
(gdb) run < <(echo "(0 5 (#2 4))")
<...>