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Fix PS2 compilation and add ABGR color support

in case of wrong number of push/pop, a message is printed. And the stack is restored properly

* Fix ogg seek. Fixes #218

* Typo

The backtraces are looking... not so great in some of my tests. Lua has a bad habit sometimes of obscuring function names. There's sometimes some ways to improve that but I'll have to dig more later and figure out exactly what's going on.

* makefile: fix typos that made player build not really do what was intended.

 * audio: add a guardband to test for mixer memory corruption. Enabled only in debug/tooling builds.

* 2 typo

* Fix for missing sound generation.

(left over from an earier sound-crash debugging session)
Co-authored-by: Jean-André Santoni <jean.andre.santoni@gmail.com>

* Luasocket for windows

* Try to fix linking

* Try to fix linking

* Fix luasocket support

* Add CI

rawgeti bypasses metatable lookups (index overloading, essentially). We don't need to care about it.
Co-authored-by: Jean-André Santoni <jean.andre.santoni@gmail.com>

* fix looping logic bug in WAV streaming decoder.

This was meant to make it into my earlier PR that added non-canonical WAV support. I fixed it over a week ago, but apparently it's hard to keep 5+ simultaneous PRs organized.

* Fix wav stereo sample playback too.

(I had only tested stereo ogg formats so far)

- fix issue where (null) is printed on errors (#87)
 - fix several issues where lua stack was not correctly managed
 - fix a bug in keyboard keystate init
 - optimize some cases of lua stack management
 - Add custom atpanic() handler (we can expand on this later)

I didn't use the unit test framework for two reasons - one, I can't get it to work due to some lua include/require dir problems (could be windows-specific issue), and two, most of the "unit test framework" of luaunit is not useful for the purpose of testing the problems that usually need testing in multimedia applications.

I set this up as a SUCCESS/FAILURE thing at the moment for example, but often these things are better built as a fuzzy "just report # of voices and dump voice info" procedure, which is checked against log output that is verified as what we expect. And then, if a new log != expected log output, generate some error report for devs to look at. (and, by chance, many such "failures" are harmless or intentional, and verify new log as expected results and move on, etc).

* Added new build types: Debug, Tool, and Player.

 Debug is -O0 compiled with all assertions enabled.
 Tool is -O1 compiled with debug assertions disabled entirely.
 Player is -O3 compiled with tool assertions disabled, and all ignorable assertions demoted to log-only.

Implementation of ignorable asserts is still partial, but as it stands this change is OK to go live (can add features later). On the todo list:
  - add popup to allow content creator to ignore the assert
  - add lua stacktrace information when lua context seems relevant

* GHActions updated to be aware of new player and tool build configs

* makefile: allow changing config from CLI without having to make clean

Also force rebuild of vcxproj target since dep checking is currently insufficient. it should be checking dirs of all globbed source file includes for modifications, but it's not. and this is a really fast step, no point in not running it for now

* Added lutro_errorf and lutro_alertf for logging errors and popup alerts, respectively.

 - Cleans up macros and keeps assertions clearly in the domain of Debug and Tooling builds.
 - removed play_assert and friends, which were both confusing terminology and not practical in design

* audio: remove native pointer dependency on Source

We can't store pointers to lua userdata in C. Lua may move the pointers at any time. So instead we must dereference the lua_ref to obtain the pointer at the point it is used, for example while mixing.

Fixes a problem where the engine can crash after some amount of time, depending wildly on game behaviors and memory usage. In many cases no crash may ever occur. I have a test locally (still WIP) that verifies this problem/fix.

* Added new build types: Debug, Tool, and Player.

 Debug is -O0 compiled with all assertions enabled.
 Tool is -O1 compiled with debug assertions disabled entirely.
 Player is -O3 compiled with tool assertions disabled, and all ignorable assertions demoted to log-only.

Implementation of ignorable asserts is still partial, but as it stands this change is OK to go live (can add features later). On the todo list:
  - add popup to allow content creator to ignore the assert
  - add lua stacktrace information when lua context seems relevant

* GHActions updated to be aware of new player and tool build configs

* makefile: allow changing config from CLI without having to make clean

Also force rebuild of vcxproj target since dep checking is currently insufficient. it should be checking dirs of all globbed source file includes for modifications, but it's not. and this is a really fast step, no point in not running it for now

* Added lutro_errorf and lutro_alertf for logging errors and popup alerts, respectively.

 - Cleans up macros and keeps assertions clearly in the domain of Debug and Tooling builds.
 - removed play_assert and friends, which were both confusing terminology and not practical in design

* WAV: fix decoding of non-canonical wave headers.

In short, we can't assume anything about these pesky subchunks.

* printf formatting fixed

* Added new build types: Debug, Tool, and Player.

 Debug is -O0 compiled with all assertions enabled.
 Tool is -O1 compiled with debug assertions disabled entirely.
 Player is -O3 compiled with tool assertions disabled, and all ignorable assertions demoted to log-only.

Implementation of ignorable asserts is still partial, but as it stands this change is OK to go live (can add features later). On the todo list:
  - add popup to allow content creator to ignore the assert
  - add lua stacktrace information when lua context seems relevant

* GHActions updated to be aware of new player and tool build configs

* makefile: allow changing config from CLI without having to make clean

Also force rebuild of vcxproj target since dep checking is currently insufficient. it should be checking dirs of all globbed source file includes for modifications, but it's not. and this is a really fast step, no point in not running it for now

* Added lutro_errorf and lutro_alertf for logging errors and popup alerts, respectively.

 - Cleans up macros and keeps assertions clearly in the domain of Debug and Tooling builds.
 - removed play_assert and friends, which were both confusing terminology and not practical in design

fails then the entire build is broken

audio: add support for 'samples' and 'seconds' to source:tell

Update libretro-common

This was supposed to get added along with it being added to source:seek, but I forgot. >_<

* Replace rpng with stb_image for image loading

This is still a work in progres. We need to convert the image format to ensure images display correctly

* Flip the bits

* Add STBI_NO_THREAD_LOCALS