Ruby: Adjust to use the qlpack data-flow api.

Author: aschackmull

ruby/ql/lib/codeql/ruby/DataFlow.qll

@@ -10,6 +10,8 @@ import codeql.Locations
  * global (inter-procedural) data flow analyses.
  */
 module DataFlow {
-  import codeql.ruby.dataflow.internal.DataFlow
+  private import codeql.ruby.dataflow.internal.DataFlowImplSpecific
+  private import codeql.dataflow.DataFlow
+  import DataFlowMake<RubyDataFlow>
   import codeql.ruby.dataflow.internal.DataFlowImpl1
 }