What changed in EDuke32, build by build

(ATM broken) support for PNG highpal files; their dimensions must be the same as the TGA ones.

Highpalookup support is more or less ready, also checked in sample script to

Get the glTexImage3D function pointer from the ICD, not from dlsym/GetProcAddress. This fixes OpenGL on Windows since opengl32.dll only has version 1.1 symbols.

Fix release builds.

Highpalookup maps implementation on the renderer side. Currently set to a hardcoded highpalookup of 6:6:6->RGB and causes a noticeable quality drop. Use the debug1 cvar to toggle ingame.

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.

d'oh

Fix the build for everything else; it looks like the macro definition for

fix r1740 msvc build breakage

Atrributify various function declarations. Right now the attributes used are noreturn, nonnull and format, the latter allowing us to catch silly printf errors. Again, these range from relatively benign to disastrous.

Strip out most duplicated Makefile stuff into Makefile.common -- this should make configuration and maintenance much less troublesome. Attention to everyone who builds their own Edukes: you may have to re-set some paths like the one to the DirectX SDK.

Revert the four Makefiles to have a base version in case I screw up again...

getcwd with NULL gives us memory allocated from the system, so don't try to use nedmalloc to free it.

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.

Fix a bug where having two or more lighting passes on a multi-surface mdsprite would leak some GL state and disable blending for all but the first surface.

This commit doesn't add anything interesting for anyone not interested in tracing down completely absurd bugs.

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

Fix digitalnumberz spacing and saving/loading of screen size

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.

remove obsolete CON compile warnings about affecting multiplayer sync, add -nodinput compatibility parameter to work around DirectInput crash issues on certain systems, fix http://forums.duke4.net/index.php?s=&showtopic=2961&view=findpost&p=60752

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.

pass NEDMALLOC variable to build/Makefile