Add -p [address:]port option for binding to addresses, patch from

Max-Gerd Retzlaff

--HG--
extra : convert_revision : a9b0496634cdd25647b65e585cc3240f3fa699ee

runopts.h

@@ -55,6 +55,7 @@ typedef struct svr_runopts {
 	/* ports is an array of the portcount listening ports */
 	char *ports[DROPBEAR_MAX_PORTS];
 	unsigned int portcount;
+	char *addresses[DROPBEAR_MAX_PORTS];
 
 	int inetdmode;