Merge a lot of networking code for playerState_t and entityState_t.
Generalize networking arrays in playerState_t, supports up to 1024 elements.
Remove oldsize variable from msg.c
Prepare msg.c for moving net field lists to game/cgame

Fix changedVectors command.
Move entityStateFields and playerStateFields to game/cgame
Fix sending stats, ammo, and persistant values

Needed to allow sending negative values.
Allow mods to change entityState_t and playerState_t

Note: Entity state baseline is currently disabled, needs to be sent later (cgame needs to be loaded to read delta entity states).
Fix kick and kicknum command crashing server
Reformat CG_RemoveNotifyLine()
Fix notify system acessing memory beyond end of arraysy