tdb: version 1.3.6

tdb: version 1.3.6

* Fix runtime detection for robust mutexes in the standalone build.
  bug #11326
* Possible fix for the build with robust mutexes on solaris 11
  bug #11319

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Fri Jun 12 19:55:34 CEST 2015 on sn-devel-104

(cherry picked from commit 4ddf78a282c85e84b6201a79b707fad9487f3ccd)

The last 13 patches address

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11331
Backport tdb-1.3.6.

Autobuild-User(v4-2-test): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(v4-2-test): Sat Jun 20 23:13:17 CEST 2015 on sn-devel-104