If the client has caught up to the server -- say, during a wipe -- make GetLag return a ping of zero

Should fix the momentarily large ping bug.

Don't advertise offline

See merge request !300

This appears to be a long-time bug that exists upstream too, but nobody even knew about it before the MS rules alert made it clear this was actually happening!

Don't use localaim/angle in skybox in demos

Closes #18

See merge request !299

cmake: add exchndl link on mingw32

See merge request !297

cmake: remove win32 subdirectory

See merge request !296

Make separate deadzones for x/y axis + menu options

See merge request !265

Don't sleep w/ fpscap 0 and vsync enabled

See merge request !294

fix portal interp view positioning and camera reset

Closes #14 and #12

See merge request !293

Various fixes for 1.6

Closes #17, #15, and #11

See merge request !292

Update gfx.kart hash

CONS_Printf calls CON_Drawer during startup, thread
collision stuff.

Fixes some wild behavior when a lot of hole punching
requests are coming in.

This reverts commit 5ec44ba3, reversing
changes made to 4c5d69b7.

Doesn't prevent it from happening later if the rules weren't successfully fetched, though.

Notably caused by a difference in behaviour between Software and GL that was already resynchronised in the 2.2 codebase.

Seems to be a regression in internal too. Requires more analysis on behaviour in the 2.2 engine, but essential for maintaining compatibility in 2.1 (such as with Opulence wobbly carpet).

- `cv_masterserver` - Replaces a hack checking for the original SRB2 MS addres every time, and additionally catches those who tested an early version of the http MS.
- `cv_usegamma` - This was previously WAY too easy to accidentially change. This way, a user who has had this accidentially happen will automatically return to baseline.