Add example SQL file.

See merge request !330

Update server name insantly

See merge request STJr/SRB2!344

Fix glitches with flats visible when looking up/down in 1st person (software renderer fix)

See merge request !282

Print copyright notice in stdout console on program start

See merge request !347

Last min cleanup

See merge request !342

CMake: Use internal libs.

See merge request !325

Update source copyrights to 2018

See merge request !346

Extra credits update .21

See merge request !345

Fix M_FindResponseFile returning garbage data

See merge request !254

Render the skies correctly on splitscreen in OpenGL mode

Render the startup screen on OpenGL mode

m_fixed: asm: cc is not a register

Add myargmalloc boolean to detect whether we allocated myargv ourselves or not, so we don't free myargv if we didn't

2.1.21 credits update

See merge request !339

Add README and LICENSE for installs

See merge request !335

Make the credits pics darker

See merge request !336

Make the error less confusing

See merge request !337

Master Server Update alert fix

See merge request !333

Disappearing servers fix

See merge request !334

Fix servers disappearing from the server list when you refresh, by forcefully closing connnections to the servers immediately after sending ASKINFO. Also force close connections to old server list when refreshing, because we don't need to hear from them anymore full stop.

FOF wall rendering fixes and cleanup

See merge request !317

Fix the nonsense going on here regarding dc_colormap, this makes FOF walls appear strange if they were for a fog block with colormap adjacent to a normal sector with a colormap and no FOFs.

...that was a mouthful