Added Wayland support

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...

src/external/glfw/README.md

@@ -69,7 +69,7 @@ and the API reference.
 ## Contributing to GLFW
 
 See the [contribution
-guide](https://github.com/glfw/glfw/blob/master/.github/CONTRIBUTING.md) for
+guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for
 more information.
 
 
@@ -118,7 +118,7 @@ find that tool.
 
 Bugs are reported to our [issue tracker](https://github.com/glfw/glfw/issues).
 Please check the [contribution
-guide](https://github.com/glfw/glfw/blob/master/.github/CONTRIBUTING.md) for
+guide](https://github.com/glfw/glfw/blob/master/docs/CONTRIBUTING.md) for
 information on what to include when reporting a bug.
 
 
@@ -148,15 +148,18 @@ information on what to include when reporting a bug.
 - Added `glfwGetJoystickHats` function for querying joystick hats
   (#889,#906,#934)
 - Added `glfwInitHint` and `glfwInitHintString` for setting initialization hints
+- Added `glfwGetWindowOpacity` and `glfwSetWindowOpacity` for controlling whole
+  window transparency (#1089)
 - Added `glfwGetX11SelectionString` and `glfwSetX11SelectionString`
   functions for accessing X11 primary selection (#894,#1056)
 - Added headless [OSMesa](http://mesa3d.org/osmesa.html) backend (#850)
 - Added definition of `GLAPIENTRY` to public header
-- Added `GLFW_TRANSPARENT` window hint for enabling window framebuffer
-  transparency (#197,#663,#715,#723,#1078)
+- Added `GLFW_TRANSPARENT_FRAMEBUFFER` window hint and attribute for controlling
+  per-pixel framebuffer transparency (#197,#663,#715,#723,#1078)
 - Added `GLFW_CENTER_CURSOR` window hint for controlling cursor centering
   (#749,#842)
 - Added `GLFW_JOYSTICK_HAT_BUTTONS` init hint (#889)
+- Added `GLFW_LOCK_KEY_MODS` input mode and `GLFW_MOD_*_LOCK` mod bits (#946)
 - Added macOS specific `GLFW_COCOA_RETINA_FRAMEBUFFER` window hint
 - Added macOS specific `GLFW_COCOA_FRAME_AUTOSAVE` window hint (#195)
 - Added macOS specific `GLFW_COCOA_GRAPHICS_SWITCHING` window hint (#377,#935)
@@ -168,6 +171,8 @@ information on what to include when reporting a bug.
 - Added `GLFW_OSMESA_CONTEXT_API` for creating OpenGL contexts with
   [OSMesa](https://www.mesa3d.org/osmesa.html) (#281)
 - Added `GenerateMappings.cmake` script for updating gamepad mappings
+- Deprecated window parameter of clipboard string functions
+- Deprecated charmods callback
 - Removed `GLFW_USE_RETINA` compile-time option
 - Removed `GLFW_USE_CHDIR` compile-time option
 - Removed `GLFW_USE_MENUBAR` compile-time option
@@ -201,6 +206,7 @@ information on what to include when reporting a bug.
                   (#650,#1071)
 - [Win32] Bugfix: Returned key names did not match other platforms (#943)
 - [Win32] Bugfix: Undecorated windows did not maximize to workarea (#899)
+- [Win32] Bugfix: Window was resized twice when entering full screen (#1085)
 - [X11] Moved to XI2 `XI_RawMotion` for disable cursor mode motion input (#125)
 - [X11] Replaced `_GLFW_HAS_XF86VM` compile-time option with dynamic loading
 - [X11] Bugfix: `glfwGetVideoMode` would segfault on Cygwin/X
@@ -214,6 +220,7 @@ information on what to include when reporting a bug.
 - [X11] Bugfix: Incremental reading of selections was not supported (#275)
 - [X11] Bugfix: Selection I/O reported but did not support `COMPOUND_TEXT`
 - [X11] Bugfix: Latin-1 text read from selections was not converted to UTF-8
+- [X11] Bugfix: NVidia EGL would segfault if unloaded before closing the display
 - [Linux] Moved to evdev for joystick input (#906,#1005)
 - [Linux] Bugfix: Event processing did not detect joystick disconnection (#932)
 - [Linux] Bugfix: The joystick device path could be truncated (#1025)
@@ -241,6 +248,8 @@ information on what to include when reporting a bug.
                   notification was shown (#971,#1028)
 - [Cocoa] Bugfix: Some characters did not repeat due to Press and Hold (#1010)
 - [Cocoa] Bugfix: Window title was lost when full screen or undecorated (#1082)
+- [Cocoa] Bugfix: Window was resized twice when entering full screen (#1085)
+- [Cocoa] Bugfix: Duplicate size events were not filtered (#1085)
 - [WGL] Added support for `WGL_EXT_colorspace` for OpenGL ES contexts
 - [WGL] Added support for `WGL_ARB_create_context_no_error`
 - [GLX] Added support for `GLX_ARB_create_context_no_error`