This will probably call DRPC_UpdatePresence slightly less?

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As a slight change, the server list will be populated even on an outdated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.

(cherry picked from commit 1f38db46298181d117432e12e88b326a92b4b785)

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

This took fucking ages and it still fails sometimes in edge cases, but I
don't give a FUCK right now.

The new default is 15 minutes as well. And if you think that's too long, I have
confirmed that the Master Server delists inactive servers after a whopping 40
minutes, at least.

Sal authored 4 years ago and wolfs committed 4 years ago

VERSION is the first number, SUBVERSION is the second number, and the third number burns in hell; we really don't need that precision

# Conflicts:
#	src/doomdef.h

Cvars:

http_masterserver is the url to the master server's API.
masterserver_token may be an authentication token.

This reverts commit 4d739fe7.

This reverts commit aa4ce2b2.

This reverts commit fc8ebe83.

Reconnect if the socket is closed.
Report the proper error from SO_ERROR and report an error from getsockopt.

And somehow this applies if you use `addfile` after having added the server.
Some claim that there are other cases too.