8112746: Followup to JDK-8059557 (JEP 245)

Several improvements to range/constraint check feature.

Reviewed-by: coleenp, ddmitriev, sangheki, kbarrett

hotspot/src/share/vm/runtime/commandLineFlagRangeList.hpp

@@ -38,6 +38,11 @@
  * then we need to use constraint instead.
  */
 
+class CommandLineError : public AllStatic {
+public:
+  static void print(bool verbose, const char* msg, ...);
+};
+
 class CommandLineFlagRange : public CHeapObj<mtInternal> {
 private:
   const char* _name;