cross-references are not created when artifacts from different projects are linked.

functionnaly ok

refactoring
Autoload git

Change-Id: Ie9e53d5bcdf366f1d15874c0c54f3f7b44a42ccb
Merge commit 'refs/changes/55/355/2' of http://gerrit.tuleap.net/tuleap into stable

* http://gerrit.tuleap.net/tuleap:
  Autoload git
This is Tuleap 5.12.99.17
Merge commit 'refs/changes/52/352/1' of http://gerrit.tuleap.net/tuleap into stable

* http://gerrit.tuleap.net/tuleap:
  cross-references are not created when artifacts from different projects are linked.
This is Tuleap 5.12.99.17
Merge branch 'master' of tuleap.net:tuleap/tuleap/stable into stable

* 'master' of tuleap.net:tuleap/tuleap/stable:
  This is Tuleap 5.12.99.17
  Autoload git

Conflicts:
	ChangeLog