request #6524: admin tracker permission delegation not compatible php 5.1

Change-Id: I1f1c3aad49d8282199804ca73fe2490a12ead21b
Merge commit 'refs/changes/46/2146/2' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6524: admin tracker permission delegation not compatible php 5.1

Change-Id: I115d658fa97001b9e72f9063d662e511df82728c
Tuleap 6.11.99.31

Change-Id: I3bf6a33568ecfb94e9c13dd503f08d905303dcea