from FreeBSD port:
- uses our rsaref pkg if USE_RSAREF2 is YES
- doesn't use USA_RESIDENT; instead uses USE_RSAREF2 since MIT students
and staff may legally use mpilib instead of rsaref
- builds 2.6.3a with rsaref as well as 2.6.3ia without (all based on the
same sources)
- uses asm routines on i386, sparc, and m68k