ser_ctx.c (krb5_context_size, krb5_context_externalize,

ser_ctx.c (krb5_context_size, krb5_context_externalize,
	krb5_context_internalize): Add missing fields from the serialized
	context: clockskew, default_kdc_req_sumtype, default_ap_req_sumtype,
	default_safe_sumtype, kdc_default_options, library_options,
	profile_secure, fcc_default_format, scc_default_format.

ser_actx.c (krb5_auth_context_size, krb5_auth_context_externalize,
	krb5_auth_context_internalize): Serialize the two fields req_cksumtype
	and safe_cksumtype, instead of the one cksumtype field.

mk_safe.c (krb_mk_safe): Use safe_cksumtype instead of cksumtype in
	the auth context.

mk_req_ext.c (krb5_mk_req_extended): Use req_cksumtype instead of
	cksumtype in the auth context.

init_ctx.c (krb5_init_context): Add support for new profile
	relations libdefaults/tkt_lifetime, libdefaults/kdc_req_checksum_type,
	libdefaults/ap_req_cksumtype, libdefaults/safe_checksumtype, and
	libdefaults/kdc_default_options.

auth_con.h: Remove old cksumtype element, and replace it with
	req_cksumtype and safe_cksumtype.

auth_con.c (krb5_auth_con_init): Initialize the req_cksumtype and
	safe_cksumtype from the context's default req_cksumtype and
	safe_cksumtype.  (krb5_auth_con_set_req_cksumtype,
	krb5_auth_con_set_safe_cksumtype): New functions, to replace old
	krb5_auth_con_setcksumtype

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@8017 dc483132-0cff-0310-8789-dd5450dbe970