upgrading package: gradle 4.7 -> 4.8

gradle/gradle.spec

@@ -22,8 +22,8 @@
 ##
 
 #   package version
-%define       V_opkg 4.7
-%define       V_dist 4.7
+%define       V_opkg 4.8
+%define       V_dist 4.8
 
 #   package information
 Name:         gradle
@@ -36,7 +36,7 @@ Class:        PLUS
 Group:        Building
 License:      Apache
 Version:      %{V_opkg}
-Release:      20180418
+Release:      20180604
 
 #   list of sources
 Source0:      http://services.gradle.org/distributions/gradle-%{V_dist}-bin.zip