Move master server presence updates to Advertise_OnChange

See merge request KartKrew/Kart-Public!227

Make "divide by zero" or "modulo by zero" errors show the file and line of where it happened

See merge request KartKrew/Kart-Public!228

Shouldn't break scripts as it stops execution as soon it happens, like it already does.

This will probably call DRPC_UpdatePresence slightly less?

Rename the "small" variable to "isSmall"

See merge request KartKrew/Kart-Public!226

Reported by MK, apparently "small" is considered a data type for some systems. After a little bit of research, apparently it can happen when including <windows.h>... whatever, just rename the variable :p

(cherry picked from commit 6f51c68c)

This should work for mingw and linux so far.

(cherry picked from commit f92026f9)

(cherry picked from commit 9495e6354fed1028c6fc502cc9d946cfdd0b7896)

(cherry picked from commit ef2bff6383b16385f9874e1c9c6b66c9df794f5b)

(cherry picked from commit 4059c6a6)

(cherry picked from commit 00943e9e)

(cherry picked from commit 4e1d54c3)

(cherry picked from commit 193c45aa)

(cherry picked from commit 489bb81d)

If the version is not supported by the Makefile, the flag for the latest
version supported is set instead.

(cherry picked from commit bf90fbb9)

Master Server 2

See merge request KartKrew/Kart-Public!224

Battle item balance

See merge request KartKrew/Kart-Public!222

Apply volume to sounds that have an origin

See merge request KartKrew/Kart-Public!223

Don't let players change their name more than five times per minute

See merge request KartKrew/Kart-Public!221

Save renderer to file

See merge request KartKrew/Kart-Public!220

Removes rooms, replaced with cv_advertise and "Advertise" on the host menu.

According to the new API, SRB2APPLICATION is sent instead of MODID. A contact
field was added, but there is no means of accessing it or setting it.

As a slight change, the server list will be populated even on an outdated
version of the game. (The new API was designed with this in mind.) The update
alert is still presented first of course.

Previously sounds with an origin would always start at max volume. This is
because the distance calculation adjusts the volume, and that volume needs to
be updated every tic as distance changes. Storing the original volume works.

SetCurrentDirectory to where the exe lives

See merge request KartKrew/Kart-Public!219

- Far more inclined to give you Orbinaut, Jawz, Invincibility, and Grow. Far less inclined to give you Bananas or Sneakers.
- Item odds no longer scale with bumper count differences.