Fix zone memory leak in OpenGL1 renderer
Fix client zone memory leak when connected to a network server

Client's zone was leaking 9063584 bytes (approx. 8.65MB) each map change when connected to a network server. Size of leak would vary based on cgame's entity state and player state size.

I think the issue was cl being cleared before trying to free cl.* variables. Also changed snapshot player states to all be allocated at cgame load, instead of constantly allocating and freeing every time a snapshot was received.
Show more debug info in Z_Free, DA_Free, and meminfo command
Fix zone memory leak in OpenGL2 renderer

meminfo command showed the dynamic renderer zone amount going up by 1824 bytes each time I reloaded map using map command.
Merge remote-tracking branch 'ioquake3/master'