solve write_lock dilemma of lookup_route.

limit node entries

don't use random as qos value...

crypt_request source route should use the entries of a rrep packet

check use of read_lock_bh/write_lock_bh instead of spinlocks

choose sigtype on module load




bugreport to Alex Song:

in dsr-kmodule.c
--    while (optptr - optstart != ntohs(dsrhdr->length)) {
++    while (optptr - optstart != dsrhdr->length) {



