optimise rabbit_channel:process_routing_result/6
- put most common clause first
- inline record_confirm/3
optimise pmon:monitor_all common cases
optimise rabbit_amqqueue:lookup/1 common cases
merge default into bug25369
optimise rabbit_trace:tap_{in,out} common cases
optimisation: inline rabbit_guid:blocks_to_binary/1
optimisation: ditch guards on rabbit_misc:r/{2,3}
optimisation: macro-fy rabbit_channel:incr_stats/3
so we can avoid constructing complex terms for stats when stats
emission is disabled
Merge bug25369