Arla 0.43 with MIT Kerberos on FreeBSD 5.5

DES_cblock and DES_key_schedule appear in a few places in arla 0.43,
but they aren't defined in MIT kerberos 1.5's kerberosIV/des.h.

des_cblock and des_key_schedule do appear in MIT kerberosIV, and adding

#define DES_cblock des_cblock
#define DES_key_schedule des_key_schedule

to arla-0.43/rxkad/krb4-protos.h is enough for arla to seem to work
with krbafs 1.2 (although AFS_SYSCALL is 339, not the 210 it expects).

To compile aklog, I needed to:

define HAVE_KRB_AFSLOG_UID
include krbafs.h rather than kafs.h

Eric