(krb5_cc_clear_mcred): new function, clear a krb5_creds to use with krb5_cc_retrieve_cred
(krb5_cc_clear_mcred): new function, clear a krb5_creds to use with
krb5_cc_retrieve_cred


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@12421 ec53bebd-3082-4978-b11e-865c3cabbd6b

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal