OCTSAV_EMPTY fix


git-svn-id: https://svn.code.sf.net/p/sauerbraten/code/src@4995 07af1644-1164-4067-b897-63bf4dc9b748
server port checks


git-svn-id: https://svn.code.sf.net/p/sauerbraten/code/src@4996 07af1644-1164-4067-b897-63bf4dc9b748
Merge branch 'master' into spaghettimod

Conflicts:
	engine/master.cpp
Merge branch 'master' of github.com:pisto/spaghettimod into spaghettimod