Default aboveheadiconsize to 140
Add "sprint" to walk
Prepare to add cn to some bot-applicable messages
Backport new event handling system
Backport serverballistics.h
Also backport lag trust -l as -kl
Partially backport SV_WEAPCHANGE for bots
Fix SV_EXPLODE
Exemptions for message overflow
Fix server tile types
also fix pickups
Fix pickups on floor heightfields
Add map collision checks
Restore FRAG_ and STREAK_ enumerations
Move server death code to serverdied
Backport client::suicide()
Merge remote-tracking branch 'remotes/origin/master' into master2

Conflicts:
	source/src/clients2c.cpp
	source/src/entity.h
	source/src/server.cpp
	source/src/serverevents.h
	source/src/weapon.h