Preserve attributes when duplicating a name, using the mechanism's
implementation of gss_duplicate_name if present, or a loop over
the attributes if not.


https://github.com/krb5/krb5/commit/0b43147cd2bc57bb7753c337a83440add88c869f
Commit By: ghudson
Revision: 24843
Changed Files:
U   trunk/src/lib/gssapi/krb5/gssapi_krb5.c
U   trunk/src/lib/gssapi/mechglue/g_canon_name.c
U   trunk/src/lib/gssapi/mechglue/g_dup_name.c
U   trunk/src/lib/gssapi/mechglue/g_glue.c
U   trunk/src/lib/gssapi/mechglue/g_initialize.c
U   trunk/src/lib/gssapi/mechglue/mglueP.h
U   trunk/src/lib/gssapi/spnego/gssapiP_spnego.h
U   trunk/src/lib/gssapi/spnego/spnego_mech.c