Took defines from libirc_rfcnumeric.h in use. Fixed upper/lower case channel name mapping.
Took defines from libirc_rfcnumeric.h in use. Fixed upper/lower case
channel name mapping.

gdamjan/communi-desktop,communi/communi-symbian,communi/communi-desktop,communi/communi-desktop,jpnurmi/communi-desktop,communi/communi-symbian,communi/communi-symbian,communi/communi-symbian,sevanteri/communi-desktop