#epel9 — Public Fediverse posts

@hare @fedora @centos Hot off the press, any volunteers willing to test out the latest #harelang toolchain build from my COPR? It provides #x86_64 and #aarch64 builds for #F38, #F39, and #EPEL9.

$ dnf copr enable mroche/hare
$ dnf install hare

Some other changes:
- New cross-compile meta packages for #GNU and #LLVM dependencies.
- I've created a convenience script, harex, to switch to non-GNU toolsets. Just set HARE_XCOMPILE_TOOLCHAIN to "llvm". User specified env vars will still be respected.