Changing mod_lua to stable
I've been pondering on the state of mod_lua, and it seems like it's time
to get rid of the 'experimental' note, which still scares off a lot of
people. The API has been steady over the past few years, I believe, and
the code itself seems to be in a stable state, so I'm inclined to go
ahead and get it moved over to stable, including switching from CTR to RTC.
I think a lazy 72h consensus should do nicely here, WDYT?