Make command net_restart work so that port/ip settings can be changed without server restart

code/qcommon/qcommon.h

@@ -160,7 +160,7 @@ typedef struct {
 
 void		NET_Init( void );
 void		NET_Shutdown( void );
-void		NET_Restart( void );
+void		NET_Restart_f( void );
 void		NET_Config( qboolean enableNetworking );
 void		NET_FlushPacketQueue(void);
 void		NET_SendPacket (netsrc_t sock, int length, const void *data, netadr_t to);