* Fix GLFW runtime platform detection

* Add libwayland-dev package to workflows

* Add libxkbcommon-dev package to workflows

* Add libwayland-bin package to codeql.yml

* Add libwayland-client0 and libwayland-cursor0 packages to codeql.yml

* Use libwayland-dev in codeql.yml

* Add libxkbcommon-dev to codeql.yml

* Remove libwayland-bin from linux.yml and linux_examples.yml (libwayland-dev includes it as a dependency)

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Co-authored-by: Ray <raysan5@gmail.com>

* Update GLFW to 3.4 (draft)

* Add _glfwConnectNull() function to rglfw.c

* Update rglfw.c

* Update Makefile

* Makefile: Replace USE_WAYLAND_DISPLAY with DISABLE_WAYLAND

* Revert "Makefile: Replace USE_WAYLAND_DISPLAY with DISABLE_WAYLAND"

This reverts commit 9e79abde78.

* GlfwImport.cmake: Replace GLFW_USE_WAYLAND with GLFW_BUILD_WAYLAND

* Update rglfw.c

* Output platform selected by GLFW to TRACELOG

* GLFW has removed Mir support

Move/Add Feature Test Macros before any includes.
See: [GNU Feature Test Macros](https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html)
> You should define these macros by using ‘#define’ preprocessor directives at the top of your source code files. These directives must come before any #include of a system header file. It is best to make them the very first thing in the file, preceded only by comments.

Alternative changes to rcore would be to change _POSIX_C_SOURCE to
200809L, which removes the need to define _XOPEN_SOURCE >= 500.

These changes allow for compilation with -std=c* (such as -std=c99)
without adding -D macros to the build step.

Co-authored-by: JayLCypher <jaylcypher@github.com>

WARNING: This could be a BREAKING CHANGE for some platforms! I'm afraid something could be wrong on `rglfw.c` module.

To be able to compile on Windows I had to modify `glfw/src/platform.c` line 74. I couldn't manage to compile without that change, help is welcome!

* Update year of copyright notices

* Fix mistake in comment

* Fix typo ("algorythms")

* Replace tabs with spaces

* Remove trailing whitespace and fix mistake in comment

* Fix ExportImageAsCode missing comment rectangle corner

* Replace tab with spaces

* Replace tabs with spaces

Updated to latest GLFW library and working on Wayland support, still
looking how to implement it on raylib because it just exposes
PLATFORM_DESKTOP and defaults to X11 windowing system on Linux...

OpenAL Soft backend is still available in audio module, I'm thinking if
exposing it for building in some way or just left it there for advance
users to switch to it manually in case of necessity...

There have been two problems:

* GLFW itself was compiled with the definitions for compiling
_against_ GLFW (fixed by removing requirement for external glfw)

* rglfw.c was being compiled as C code, although it includes
Objective C files.

This _might_ break the Windows build, needs to be checked.

Fixes #391, but as noted I'd prefer though a separate source directory
and build script for GLFW.

...to define proper values

Compiling GLFW library with raylib avoids external dependencies, this
way we solve version problems in some platforms