#4150 introduced a default value for linux_display_backend,
which makes X11-only systems fail to build.

* [build.zig] Overridable definitions from config.h
The new Options field "config" holds a string the user can set in the
format "-Dflag_a=1 -Dflag_b=0 ..." to override the values set in
`config.h`.
The file is parsed and the default values are appended to the
compilation flags, if the user doesn't override them.
The user string is appended to the compilation flags.
The "-DEXTERNAL_CONFIG_FLAGS" is added to prevent "config.h" inclusion.

Note: a certain format is assumed for the formatting of config.h
Note: this commit references the closed issue #3516

* [build.zig] Only SUPPORT_* definitions are overridable

Lines from `config.h` which contains "SUPPORT" are added to compilation after being parsed:
- remove whitespace
- format to preprocessor option https://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html

The user supplied flags have priority over the ones read from the file.

NOTE: extension to commit 4da7f82e6f912485351167da3bbc91807371fdee, the logic is simplified
because the SUPPORT flags only have binary values, which makes them easier to parse.

* GLFW AUTO_ICONIFY flag is now set to false per default.

Previously AUTO_ICONIFY was only disabled if the user requested a Fullscreen window from the start. After that it was not possible to change this behavior on the user side anymore, even when changing to a Fullscreen window.

The AUTO_ICONIFY causes problems on macOS. On macOS if the window is minimized because of AUTO_ICONIFY than the only way to restore it is to click on the icon in the dock. In other words when AUTO_ICONIFY is enabled alt/cmd-tabbing through windows does not work correctly. On windows it works even when AUTO_ICONIFY is enabled.

Additionally if a raylib window is in Fullscreen mode on another monitor the AUTO_ICONIFY behavior is a problem because the user might want to window to stay on the monitor even if it loses focus. (problem on all OS's)

AUTO_ICONIFY also restores the monitor hardware resolution if a fullscreen window loses focus.

* Update rcore_desktop_glfw.c

Extra space removed and comments updated with a space at the beginning

* shaders-vertex_displacement init

* implement simulation of wave in ocean

* update examples/README & add some comments

* update comments

* add gl100 shaders

* [rcore] fix gamepad axis movement and its automation event recording

This commit fixes 2 issues:
- Automation events aren't recorded for negative axis movements on
  gamepads (e.g. stick going left/up)
- 'GetGamepadAxisMovement' drift check isn't working correctly for
  triggers. Axis values between [-0.1, 0.1] are clamped to 0.0

Behaviour change:
- 'GetGamepadAxisMovement' returns default value for each axis, even
  if gamepad isn't attached.

* [rcore] inline body of 'GetGamepadAxisMovementDefault' and remove it

* Adds log warnings on invalid file data

* Separate error on missing file extension

* Changed LOG_ERROR to LOG_WARNING

---------

Co-authored-by: Jutastre <pukarlindgren@gmail.com>

* update RGFW

* fix bug with GetCurrentMonitor

* update RGFW

* update RGFW

* clean up merge

The current link 404's. Replace it with a fork.

...considering that `raylib 5.5` official release could still take some time...

* Update pbr.fs

remove presicion mediump float because it is for GLES, and not desktop GL

* Fix shadowmap.fs

also suffers the same problem as pbr.fs

Co-authored-by: jj <noname@nomail.fi>

* Zig Both Linux Desktop Platform Support

* Formating and Default Fix
Made formating fit within raylib standards and changed the default option to support both X11 and wayland on Linux.

* caught one hiding tab

* Update raylib_api.* by CI

* No need to call the color 4 times in a row, it's batched

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

If `FLAG_WINDOW_HIGHDPI` is set, `InitPlatform()` will aks GLFW to handle resize window content area based on the monitor content scale using : ` glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE); `

So `WindowSizeCallback()` does not have to handle it a second time.

* update RGFW

* fix bug with GetCurrentMonitor

* [rmodels] Re-implement `DrawBillboardPro`

* [rmodels] Add comments to `DrawBillboardPro`

* [rmodels] Make `DrawBillboardPro` consistent with `DrawTexturePro`

* Update raylib_api.* by CI

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

* remove function call

* fix