kerberos_v4.c: Add prototypes for compat_decrypt_key,

kerberos_v4.c: Add prototypes for compat_decrypt_key,
	kerb_get_principal, check_princ, v4_klog

network.c (process_packet): Make prog a const char *

main.c: Add prototypes for find_realm_data, setup_server_realm, usage,
	request_exit, setup_signal_handlers, initialize_realms, finish_realms.

kdc_util.h: Add prototypes for against_local_policy_as,
	against_local_policy_tgs, validate_as_request, validate_tgs_request,
	fetch_asn1_field, kdc_initialize_rcache, process_packet.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@6274 dc483132-0cff-0310-8789-dd5450dbe970