Fix portals

See merge request STJr/SRB2!1724

Fix #732

Closes #732

See merge request STJr/SRB2!1739

Allow people to update their Master Server listing on command.

See merge request STJr/SRB2!1518

Disable SDL error message on dedicated servers

See merge request !1735

Fix crosshairs not displaying

See merge request STJr/SRB2!1716

Fix lock-on crash (Resolves #746)

Closes #746

See merge request !1704

Fix software splats breaking and crashing in skyboxes

See merge request STJr/SRB2!1711

Fix software splats not being clipped by ceiling walls

See merge request STJr/SRB2!1712

Hack that fixes software drop shadow crashes (Fixes #159)

Closes #159

See merge request STJr/SRB2!1700

Add missing optimization to software npo2 sloped floor sprites

See merge request STJr/SRB2!1713

Fix issues with chat messages

Closes #583

See merge request STJr/SRB2!1698

Do not attempt to disconnect when a packet checksum is invalid

See merge request !1699

UDMF: Fix offset calculation for segs that represent linedef backsides

See merge request STJr/SRB2!1701

Only load map lumps that are WADs or have no extension

See merge request !1715

So they don't mess with shell scripts that expect SRB2 to exit when it crashes (like most other programs)

Don't modify drawangle when taking damage in strafe mode

See merge request !1689

Fix Nightopians

See merge request STJr/SRB2!1703

Fix A_OldRingExplode not scaling or flipping

See merge request STJr/SRB2!1709

- Resetting portalcullsector fixes the major visual glitches

- Using 32 bits for nummasks and i fixes crashes when rendering lots of portals

Blentran - updated

See merge request STJr/SRB2!1656

Several changes to default control settings

See merge request STJr/SRB2!1682

Improve OpenGL GDI Generic error message

See merge request STJr/SRB2!1673

Fix 2.2.10 pre1 rollangle crash (resolves #747)

Closes #747

See merge request STJr/SRB2!1707

Speed up taglist creation

See merge request STJr/SRB2!1702

Add collision check for flipped water drops

Closes #735

See merge request STJr/SRB2!1697

This reverts commit 13778247.