Update to the latest version from the Samba Git repository.

From the Samba log:

commit bfdc874e8b98c8ea147dbcc986f96ad4f73d800f
Author: Jelmer Vernooij <jelmer@samba.org>
Date:   Sat Aug 30 01:59:26 2014 +0200

    Various updates to the pidl README file.

    Remove samba3/samba4-specific comments, add comments about backends and files.

    Change-Id: Id2253ce85eab7a684b2c50d25f6f2604dc146a8e
    Signed-Off-By: Jelmer Vernooij <jelmer@samba.org>
    Reviewed-by: David Disseldorp <ddiss@samba.org>

    Autobuild-User(master): David Disseldorp <ddiss@samba.org>
    Autobuild-Date(master): Sun Aug 31 23:47:49 CEST 2014 on sn-devel-104

commit 6824f1aa67f0a75df5c94921e334c2b7c7771611
Author: Jelmer Vernooij <jelmer@samba.org>
Date:   Sat Aug 30 01:59:25 2014 +0200

    Remove trailing whitespace.

    Change-Id: I1e0948da34bac278edc62cd63dedd08112426e7a
    Signed-Off-By: Jelmer Vernooij <jelmer@samba.org>
    Reviewed-by: David Disseldorp <ddiss@samba.org>

Change-Id: Ifd445bf32aca2d30a6e501fc8c8dd030471ad284
Reviewed-on: https://code.wireshark.org/review/4312
Reviewed-by: Guy Harris <guy@alum.mit.edu>