Resurect FRS ghost files.

In between request #5808 and request #6338, changing a file from one package
to another or changing it's release date, make the file disappear.

Introduce a tool to make those files alive again.

It's not a forgeupgrade bucket because it needs to be executed by hand and
project per project to identify potential errors

Change-Id: I73c3441d9ac225d03ee39781ba773425fe004514
Merge commit 'refs/changes/09/2109/3' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Resurect FRS ghost files.

Change-Id: I95b14ebd5edfc9380460ee094657d4cf92ffc58e
Tuleap 6.11.99.48

Change-Id: Id5e41439057614079f621ef0b7ec4ad0e0854455