dcerpc.idl: accept invalid dcerpc_bind_nak pdus

dcerpc.idl: accept invalid dcerpc_bind_nak pdus

Older Samba versions (<= 4.1) had a bug in the dcerpc_bind_nak
idl, see commit f73ef3028c4f4583c81b611a9714608eae79360c.

Note: ndr_pull_dcerpc_bind_nak() was generated by pidl and
has been extended by the (_available == 0) check.
That's why we ignore the 80 char per line limit.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11327

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Oct 21 20:34:28 CEST 2015 on sn-devel-104

(cherry picked from commit 38d547bc0d39b56a7491a5f220905f1756c1530a)

Autobuild-User(v4-2-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-2-test): Mon Oct 26 13:40:47 CET 2015 on sn-devel-104