Kill a warning about the scope of the definition of struct AIGenericNode_s.
Don't free behaviour trees when deleting all bots.

Also, rename the function to G_BotDelAllBots – “/bot del all”.
Set the trees pointer to NULL after freeing it.
Do namelog cleanup after bot cleanup.
Merge branches 'master' and 'bots' into bots2

Conflicts:
	src/gamelogic/game/g_main.c
Fix marked buildables. Also remove unnecessary parameters from build point functions.
Merge branch 'master' into resources
Add binary navmesh format
Move code that uses detour out of the game module
Merge remote-tracking branch 'remotes/origin/master' into bots2
Add missing file
POLYFLAGS_SWIM was missing.
Don't reference a .pk3 just because of a nav mesh file.
Fix handling of behaviour tree loading failures.

Actually try to load the default; if that fails, have the bot disconnect.
Fix bots not moving
Improve route replan detection

Fixes cases where bots would freeze
Improve local obstacle avoidance to handle map geometry
Decrease flamer range in BotTargetInAttackRange
Remove Detour and Recast from the game module

Recast was never used, and Detour is no longer used here
Update Recast and Detour