git -> 2.31.0

gtk3 & gtk4 update

rebuild gemacs from emacs feature/pgtk branch,  add libotf dep, and hashpipe

libheif rebuild for new libx265

- Add missing lz4 package to EARLY_PACKAGES

- Update core_packages.txt

flatpak => 1.10.2

* Update tests

* Improve speed of cycle_test and load_test scripts

- Update jdk8 from 8u271 to 8u281
- Update jdk11 from 11.0.9 to 11.0.10
- Add jdk15 package
- Add jdk package
- Add pre-built binaries

only use libmfx for compatibility with i686

libx265: fix i686 compile, add libsoup2 for older libsoup