* auth_con.h auth_con.c Added for krb5_auth_con definition and

	* auth_con.h auth_con.c Added for krb5_auth_con definition and
		support routines.

	* mk_req.c (krb5_mk_req())
	* mk_req_ext.c (krb5_mk_req_extended())
	* rd_rep.c (krb5_rd_rep())
	* sendauth.c (krb5_sendauth())
	* mk_priv.c (krb5_mk_priv())
	* mk_safe.c (krb5_mk_safe())
	* rd_priv.c (krb5_rd_priv())
	* rd_safe.c (krb5_rd_safe())
		Added a krb5_auth_context argument and eliminated many of
		the other arguments because they are included in the
		krb5_auth_context structure.

	* send_tgs.c (krb5_send_tgs()) Eliminate call to krb5_mk_req_extended(),
		which does far more than krb5_send_tgs() needs.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@5099 dc483132-0cff-0310-8789-dd5450dbe970