Use FG1.2 fork with Gradle 4.9 fixes so we can build everything at once

gradlew

@@ -65,12 +65,7 @@ cd "`dirname \"$PRG\"`/" >/dev/null
 APP_HOME="`pwd -P`"
 cd "$SAVED" >/dev/null
 
-if [ "$1" == "--old-gradle" ]; then
-    shift
-    CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper-old.jar
-else
-    CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
-fi
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then