the old one. Rename the functions/structures from cast_* to cast128_*.
Adapt the KAME IPsec to use the new CAST-128 code, which has a simpler
API and smaller footprint.
- include string.h (instead of sys/systm.h) on userland compilation.
make compilation under src/regress/sys/crypto happier. from minoura
- (blowfish) KNF.