[cod] Server wont start.

[Paul Gamlowski]

COD 4 freaks on maprotate and needs a start map instead, this may be
the same with COD:WW

Example for COD 4:

./cod4_lnxded-bin +set dedicated 2 +set ttycon 0 +set net_ip
INSERTIPADDRESSHERE +set net_port 28960 +set com_hunkmegs 256 +set
sv_maxclients 16 +set ui_maxclients 16 +set logfile 3 +set fs_basepath
/home/username/cod4 +set fs_homepath /home/username/cod4 +set sv_pure
1 +set sv_punkbuster 1 +exec server.cfg +map mp_crash

server.cfg must not have map_rotate (unlike other versions of COD --
i.e. 1/UO/2) or it will crash.