[Freeciv-Dev] (PR#2711) make games on the gameserver restartable

["Reinier Post via RT" <rt@xxxxxxxxxxxxxx>]

Players on public gameservers should be able to restart a game.
One reason to allow this is that games quite often crash or hang.
To prevent abuse, only one incarnation of a game may be running at
the same time, and only one savegame can ever be scored in the rating 
system.

It is quite easy to extend the existing softwre to support this.
Detailed plans for implementation exist. but only in e-mail.