Merge from vendor branch TNF:

Merge from vendor branch TNF:
Mantis is a web-based bugtracking system. It is written in the PHP scripting
language and requires the MySQL database and a webserver. Mantis has been
installed on Windows, MacOS, OS/2, and a variety of Unix operating systems.
Almost any web browser should be able to function as a client. It is released
under the terms of the GNU General Public License (GPL).

Mantis is free to use and modify. It is free to redistribute as long as you
abide by the distribution terms of the GPL.