This lets the host manually remove a body if they want,
without polluting the chat with redundant messages.

Disconnected players do not become IT at round start.

If all non-ITs are disconnected, the round ends.

If all ITs are disconnected, one of the non-ITs
becomes IT, or the round ends if in Hide & Seek.

The old name made it really easy to accidentally read
R_IsPointInSubsector as R_PointInSubsector, and anyway it
didn't even make sense...

This is accomplished by simply preserving
the player's body after disconnecting.

Bodies will despawn after the number of minutes
specified by the "rejointimeout" console variable (float).
A value of 0 disables the feature completely.

Clients rejoining are identified by their IP address,
and may rejoin even if the server is full or joins are disabled,
for as long as their body remains.

From a technical standpoint, when the user disconnects,
the player they were controlling does not leave,
the underlying player_t just keeps working normally,
except it does not receive any input anymore.
When the user reconnects, they are simply "relinked"
to their player_t.

Those "soulless" players can be identified through
their "quittime" field, which is the number of tics
elapsed since the user disconnected, or zero
if still connected. "quittime" is exposed to Lua.

This fixes player 2 using player 1's "cam_turnmultiplier"
instead of player 2's "cam2_turnmultiplier"

The "VERSION" directive enables features available in a certain version of
SRB2. It may be used as "VERSION 2.2.0".

If you use strtok for (CR)LF, it'll skip the empty lines bruh.

fuck it, hopefully it works

This reverts commit 32c65ae8.