RFR: 8329820: [Linux] Prefer EGL over GLX [v10]

[Thiago Milczarek Sayao]

> Wayland implementation will require EGL. 
> 
> EGL works with Xorg as well. The idea is to be EGL first and if it fails, fallback to GLX. A force flag `prism.es2.forceGLX=true` is available.
> 
> 
> See:
> [Switching the Linux graphics stack from GLX to EGL](https://mozillagfx.wordpress.com/2021/10/30/switching-the-linux-graphics-stack-from-glx-to-egl/)
> [Prefer EGL to GLX for the GL support on X11](https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/3540)

Thiago Milczarek Sayao has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:

 - Merge branch 'master' into egl
 - Prefer EGL over GLX
 - Merge branch 'master' into egl
 - Merge branch 'master' into egl
   
   # Conflicts:
   #	modules/javafx.graphics/src/main/native-prism-es2/x11/X11GLContext.c
 - Use EGL instead of GLX

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Changes: https://git.openjdk.org/jfx/pull/1381/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1381&range=09
  Stats: 2441 lines in 36 files changed: 1857 ins; 489 del; 95 mod
  Patch: https://git.openjdk.org/jfx/pull/1381.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1381/head:pull/1381

PR: https://git.openjdk.org/jfx/pull/1381