dynamic dispatch refactored

rename struct server -> struct ircconn

Merge branch 'bugfix'

don't throttle critical traffic

Fixes: https://todo.amehut.dev/~aleteoryx/sexchat/16

remove all references to fe_* from server.c, other than ctor/dtor

remove all mentions of struct session from server.c

hexchat-2.16.2 tree