Synchronizing !3

In-source builds are pain and suffering and I am going to stop people
from doing them to save them that pain.

It still won't compile correctly. But this should avoid the error
messages related to it.

This fixes generation with USEASM enabled.

Core and SDL2 are two separate targets now. Core is a static library
that is linked into SRB2SDL2. The sources for both are separated.
When using an IDE like Visual Studio or Xcode, the source code
organized into groups that explain what that group of sources does.

In the future, "Main" could be split into a few more groups based on
file prefixes, but I think the way it is set up works for now.

Makefile targets are not affected by source_groups and typing `make`
will automatically compile both the "Core" library and SRB2SDL2
itself.

wolfs authored 10 years ago and Alam Ed Arias committed 10 years ago

Fixes https://mb.srb2.org/showthread.php?t=40279

Should work fine, but do keep in mind that this fix is untested.

Conflicts:
	src/p_floor.c

Only when actually making the debug target though!

Tested to work on MSVC, mingw-gcc

Enables ASM-NASM and adds tmap*.nas to sdl target.

No idea if this actually works.

snprintf is now available in MSVC 2015!

this is done as a POST_BUILD step

wow i'm stupid

on non debug, check assets folder in src as well

string.c, capitalization, find fixes

silently fixing a bad malloc here too shhhhhhhhh

Generates zips only at the moment