* kerberos_v4.c (kerb_get_principal): Modify to take a pointer to

	* kerberos_v4.c (kerb_get_principal): Modify to take a pointer to
	a krb5_deltat in order to return the life in seconds.  Also, use
	time_to_life() to compute krb4 life.
	(check_princ): Modify to pass a pointer to a krb5_deltat to
	kerb_get_principal().
	(set_tgtkey): Update for new kerb_get_principal() call signature.
	(kerberos_v4): Update for new check_princ() call signature.
	Modify lifetime computations to use lifetimes in seconds.
	Back-date issue time if necessary.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@12729 dc483132-0cff-0310-8789-dd5450dbe970