upgrading package: gc 7.6.2 -> 7.6.4

gc/gc.spec

@@ -22,9 +22,9 @@
 ##
 
 #   package version
-%define       V_opkg   7.6.2
+%define       V_opkg   7.6.4
-%define       V_dist   7.6.2
+%define       V_dist   7.6.4
-%define       V_subdir 7.6.2
+%define       V_subdir 7.6.4
 
 #   package information
 Name:         gc
@@ -37,7 +37,7 @@ Class:        BASE
 Group:        Libraries
 License:      MIT-style
 Version:      %{V_opkg}
-Release:      20180102
+Release:      20180129
 
 #   package version
 %option       with_threads no