Store tic values in packets on two bytes instead of one
This changes PT_CLIENTCMD and PT_SERVERTICS to use UINT16s instead of UINT8s to store tic values, which fixes a potential cause of synch failure introduced by !835 (merged).
This changes PT_CLIENTCMD and PT_SERVERTICS to use UINT16s instead of UINT8s to store tic values, which fixes a potential cause of synch failure introduced by !835 (merged).