request #6524: Fix Tuleap in PHP 5.1

Change-Id: Ibe0b44ba328999b3d732a55344365682ddc5762d
Merge commit 'refs/changes/15/2215/1' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  request #6524: Fix Tuleap in PHP 5.1

Change-Id: Ie6629fff49873c48e799ad7e653f5d2e772feab7
Tuleap 6.11.99.45

Change-Id: I9617868c7b51dfecae724ae36eb628871d7e1590