[?] somehow hide channel operators like ircnet can do?
[x] merge m_join.c and m_sjoin.c in one module (same functions, done in ratbox3)
[x] create chmode.h and put there all declarations of chm_* - this will make some modules clean
+[F] Move most use of server WALLOPS to a global mechanism.
+ [F] Add SNONOTICE protocol command (like in InspIRCd) to broadcast to a specific SNOMASK.
+ [F] Adopt commands to this framework.