[fpc-pascal] Mantis now used as bug tracker

[Florian Klaempfl]

FPC uses mantis now as bug tracker (
http://www.freepascal.org/mantis/set_project.php?project_id=6 ). Furthermore,
lazarus and fpc share the same mantis installation so bugs can be easily moved
between both projects. The price for the use of mantis is that you need an
account to submit bugs, this is because we'd some trouble with spam with the old
bug tracker and that you don't get a notification if one of the old bugs you
submitted (which have been imported into mantis) get fixed.

If you have any trouble with the new bug tracker, please let us now.