mod_smacks: Back out 48f8fa6cea7b - back in a86ae74da96c again Maybe it works now with the session patching in the previous commit

mod_smacks: Patch various self-references on the resumed session The number of places where the session is an upvalue to its own methods is too high!

mod_smacks: Back out a86ae74da96c: Fixed one problem, caused another As per a86ae74da96c the 'session' object here is the wrong session, so the attempt to block stanzas from being added to the queue twice did not work causing something of a leak. Instead we have a leak of the previous session.

mod_smacks: Back out def20683c161 The attempted fix completely broke everything after resumption.

mod_smacks: Update reference to session from send() a86ae74da96c caused the stanza queue to double on resumption because session.send() keeps a reference to the session which is what gets passed to filters, so the added flag was not seen in the filter.

util.format: Optimize most common integer format A search for log formats in use points to %s being the most common, followed by %d, so worth having a fast path for that. %g works well with most numbers and is what Lua 5.1 and 5.2 used

util.format: Ensure metatable __tostring results are also sanitized

mod_smacks: Include reason for destroying session on hibernation timeout To aid in debugging

tools/generate_format_spec: Apply lua-format to silence luacheck

util.format: Fix some formats expecting positive numbers in Lua 5.2 Amazing how string.format behaves differently under each Lua version