Some echolists (e.g. linuxnet.na) use '%' for comments (rather than ';') so...

Some echolists (e.g. linuxnet.na) use '%' for comments (rather than ';') so just ignore any lines in imported echolists that begin with a non-alpha-numeric character.

src/sbbs3/scfg/scfgmsg.c

@@ -295,7 +295,7 @@ long import_msg_areas(enum import_list_type type, FILE* stream, unsigned grpnum
 			else {
 				char* p=str;
 				SKIP_WHITESPACE(p);
-				if(!*p || *p==';')
+				if(!*p || !isalnum(*p))
 					continue;
 				if(type == IMPORT_LIST_TYPE_GENERIC_AREAS_BBS) {		/* AREAS.BBS Generic/.MSG */
 					p=str;