[Rpm-maint] lua extension API stability

[Ville Skyttä]

Hello,

I'm considering using lua in some scriptlets, and noticed that while
posix.symlink() currently exists in the posix extension included with
rpm, it no longer exists in the current upstream version, there's a 3rd
argument to posix.link() instead for that purpose:
https://github.com/rrthomas/luaposix

Are the lua APIs available to package scriptlets in rpm going to be kept
backwards compatible?