libdpkg: Add missing symbols to the version script

lib/dpkg/libdpkg.Versions

@@ -54,6 +54,7 @@ LIBDPKG_PRIVATE {
 
 	str_escape_fmt;
 	str_strip_quotes;
+	str_quote_meta;
 
 	# Variable buffer support
 	varbuf_init;
@@ -219,6 +220,10 @@ LIBDPKG_PRIVATE {
 	parsedb;
 	writedb;
 
+	dpkg_db_set_dir;
+	dpkg_db_get_dir;
+	dpkg_db_get_path;
+
 	# Log based package on-disk database support
 	modstatdb_init;
 	modstatdb_is_locked;