Enable libEGL build for all platforms, even those without llvm. Previously
it was disabled on those platforms. This has been tested on sparc64.
Remove the EGL option completely.
PR: 232729
Submitted by: jbeich
Tested by: Yoshihiko Iwama (sparc64 support)
* Switch to meson build system
* This release makes EGL support switchable. Make it a option and
disable it on mips and sparc64, due to not having libEGL in mesa-libs.
- Drop needless GH_PROJECT, link GH_TAGNAME to PORTVERSION
- Fix a typo in COMMENT and reword it; beautify pkg-descr
- Merge two USE_XORG's into one
Approved by: kwm (timeout since Oct 24)