What changed in EDuke32, build by build

* Fix a serious logic mistake with checksectorpointer. Previously, a white wall could 'connect' to a red one, leaving the reverse link intact and creating a situation like this: w_new <-> w <-- w_old.

fix some issues with compilation on mac osx; make B, N, M keys behave the same as KP1, KP2, KP3 when pointing at a polymer light (hack around keyboard strangeness)

Fix handling of lotag and friends in generic sprite search. Tags like 65535 which are really (int16_t)(-1) are now also found.

With the help of Coccinelle, eliminate a few sector[-1] accesses and calculations of &sector[-1] (bound checking code not committed).

fix non-Polymer build

Too much stuff for one commit.

have gltexcompr option in mapster32; fix prhighpal.py script

Make mapster32 know r_downsize parameter. For best caching performance, this and glusetexcache should be the same as for the game. Highpalookup script can now generate maps equivalent to the current PHRP tint defs.

A bunch of mutually unrelated updates.

Make deferred polymer model processing not crash; make tile name search case-insensitive.

Split MD3 model post-processing into common and Polymer parts and defer the latter if the game is started with a different renderer. This has the benefit of faster startup times and much less memory consumption in that case. When the user switches to Polymer later in-game, all processing is done in one run. I've observed crashes due to the music system if it takes too long, so the it may be unreliable. Also some calloc->malloc where the clearing is unnecessary.

Fixes former crash in drawline16 and swaps drawpixel with the unsafe variant there; fixes potential sector[-1] access in sliding Star Trek doors; make CC overridable in Makefiles so that other toolchains or static analyzers like scan-build/clang can be used; with its help, fix some issues, some more severe than others.

More sensible dragging in side view mode. When pasting walls in 3D mode, match the actual pixel width of the source wall.

Adds chselshade (change selected shade) to a.m32

A week worth of Mapster hacking: first, there is an experimental side view mode toggled with [F3]. Nav keys are {QWAZ}, MMB and RMB. Use with care because it is still in construction. The sector selection routines have been rewritten -- it is now possible to paste the selection into a room and a new inner loop will be added automatically (MickyC's idea). Adds m32script commands drawline16z and drawcircle16z.

Set union ['] and difference [;] for sector selection in Mapster32; probably fix for crash on clipshape-init; replace tabs in doc/build*.txt with three spaces.

a.m32 corruption checker: also handle out-of-range picnum

Fixes quite a few nasty bugs with the new clipping code, including the crash. Clip shapes are now loaded from _clipshape0.map through _clipshape9.map (no break like when loading tiles, just see if each is present). Mapster32: insert some safety code for sprites with sectnum<0. Because this is still a bad thing, have the m32script corruption checker catch this and run it periodically from EVENT_DRAW2DSCREEN. Also draw such sprites in 2D mode with a blood-red color, and make them draggable. Remove set[sector,wall,sprite] commands.

New sprite clipping for hitscan; crude debugging code for tracing down the crash that Commander is getting and I can reproduce only in real Windows with the synthesis build.

Sector-like sprite clipping. Check samples/spriteclip.txt.