Remove out of date doc and fix typo in commands/cmd_*.cpp
Move src/commands/cmd_*.cpp to src/coremods[/core_*]/
Create the core_channel module
Create the core_info module
Create the core_oper module
Create the core_user module
Create the core_xline module
Integrate coremods into the build system
Load core_*.so instead of cmd_*.so
Create the core_stub module

This handles CONNECT, LINKS, SERVER and SQUIT
Move UNLOADMODULE handler into core_loadmodule
Update detection in module loading commands that relied on old command module names
Read the die and restart password and their hash type on demand
Move {prefix|suffix|fixed}{quit|part} into core_user
Move admin settings into core_info