Remove MAXRADIUS adjustment from bounding box calculations

See merge request !2566

Fix blocknode iterating and simplify P_BlockThingsIterator

Closes #1323

See merge request STJr/SRB2!2565

Merge branch '1324-next-post-pre3-mobjremoved-hook-is-broken-always-immediately-errors-into-please-check-valid' into 'next'

Fix #1324

Closes #1324

See merge request STJr/SRB2!2564

Revive Haiku build

See merge request STJr/SRB2!2537

This was added by the Doom developers to work around the issue where
objects were not linked into all blockmap cells they were touching, and
instead just the one at the object's center. Since this is no longer
the case after commit 41613d89,
this adjustment is no longer necessary.

There was no reason to do what I did, since the loop only needs to hold
a reference to the next block. This reverts the function to how it was
before 7469a627, but holds the
reference properly.

Fix performance regressions in addon loading

See merge request STJr/SRB2!2560

Fix segfault when accessing skin from lua on a delayed removal

See merge request STJr/SRB2!2558

Fix HWR_ClearLightTables being called too late

See merge request STJr/SRB2!2557

extracolormaps own the OpenGL-specific light table data, so that has to be freed earlier.

Fix crash when spawning a BOT_2PAI on a 2D map

See merge request !2552

Fix sector portal heights

Closes #1309

See merge request !2545

Merge branch '1292-non-opaque-fof-planes-with-holed-textures-display-opaque-in-software-when-sloped' into 'next'

Make transparency in planes with "splat" rendering consistent

Closes #1292

See merge request STJr/SRB2!2550

Merge branch '1304-2-2-14-pre2-opengl-palette-rendering-does-not-reflect-changes-in-sector-s-colormap' into 'next'

Fix colormap textures not being updated for palette shaders

Closes #1304

See merge request STJr/SRB2!2546

Fix connecting to localhost on non-standard ports

See merge request STJr/SRB2!2551

Fix regression in P_SetupStateAnimation

Closes #1297

See merge request STJr/SRB2!2549

Skip unchanged value validation in CV_SetCVar if there is a can_change callback

Closes #1312

See merge request STJr/SRB2!2547

Merge branch '1317-using-the-keypad-to-type-numbers-in-the-server-address-textbox-inputs-them-twice' into 'next'

Remove keypad handling in M_HandleConnectIP

Closes #1317

See merge request STJr/SRB2!2548

Fix #1277

Closes #1277

See merge request STJr/SRB2!2509

Fix `AddonLoaded` hook

See merge request STJr/SRB2!2555

Add "AddonLoaded" Lua hook

See merge request !2405

GitLab CI: timeout apt-get update command with 2 minutes

See merge request STJr/SRB2!2553

Also, fixed a bug where OpenGL would not render a plane with regular transparency if it had the splat flag.

There is no need to have that code anymore, since keypad presses also generate ev_text events.
Additionally, made text fields in menus ignore ev_keydown events if they are keypad keys.