znc: Add support for many configurable listeners

Function add_listener called from /etc/init.d/znc, but not implemented

Signed-off-by: Pavel Demkovich <finn@finnix.servebeer.com>

net/znc/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=znc
 PKG_VERSION:=1.7.5
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://znc.in/releases \