Split kerberos prototype into two halves:
helpers to dissect ASN.1 BER in packet-ber.c
and kerberos stuff using those helpers in packet-kerberos.c
This new kerberos thing places filterable items for every single field
and also dissects the bitstring Option fields.
It is hoped that this will make it easier to extend kerberos to do decryption of service tickets.
svn path=/trunk/; revision=10122
