hitmsg cleanup


git-svn-id: https://svn.code.sf.net/p/sauerbraten/code/src@5039 07af1644-1164-4067-b897-63bf4dc9b748
sphere generation cleanups


git-svn-id: https://svn.code.sf.net/p/sauerbraten/code/src@5040 07af1644-1164-4067-b897-63bf4dc9b748
fix crash when texture list is empty


git-svn-id: https://svn.code.sf.net/p/sauerbraten/code/src@5041 07af1644-1164-4067-b897-63bf4dc9b748
Merge remote-tracking branch 'sauerlab/master'

Conflicts:
	engine/explosion.h
	engine/octaedit.cpp
	fpsgame/weapon.cpp