change speeds to tiles per second
adapt melee_range to a tile unit
adapt thread_range to tile units
change autopickup_range and powers range to tile based units
change radius of powers to tile based
Merge remote-tracking branch 'mainline/master' into floatingpointmovement
Merge remote-tracking branch 'mainline/master' into floatingpointmovement
Merge remote-tracking branch 'mainline/master' into floatingpointmovement
Merge branch 'floatingpointmovement' of https://github.com/stefanbeller/flare-game into fp_movement
Adding the default mod again.

We did get 4 complaints and probably a lot of problems relating to the
default mod being treated special go unreported.
Hence let's readd the default mod to the game data.

Flare originally was trying to be simple. This may not be true any more
for some parts of the code (optimizing and error-handling contradict
being simple), but it should be simple for the users to play.
Merge remote-tracking branch 'upstream/master' into fp_movement
Merge remote-tracking branch 'mainline/master' into floatingpointmovement
Merge branch 'floatingpointmovement' of https://github.com/stefanbeller/flare-game into fp_movement
Merge remote-tracking branch 'upstream/master' into fp_movement
Merge pull request #325 from stefanbeller/floatingpointmovement

Floatingpointmovement