Let's rescue some packages!

[Björn Persson]

As Kalev Lember noted on the devel list, several Ada packages still
haven't been rebuilt with GCC 5 in Fedora 22. Shall we try to keep them
from dropping out?

On malkin.scrye.com I could build and install Aunit, AWS, Florist and
Templates Parser without any problems. Gnatcoll and Matreshka had
compilation errors, but at least the one in Gnatcoll looked
straightforward to fix. Thus it looks like most of the packages can be
saved.

I'm applying for co-maintainership to be able to help.

Björn