Make CallCapture REPR clonable.

Author: jnthn

src/vm/jvm/runtime/org/perl6/nqp/sixmodel/reprs/CallCaptureInstance.java

@@ -1,9 +1,18 @@
 package org.perl6.nqp.sixmodel.reprs;
 
 import org.perl6.nqp.runtime.CallSiteDescriptor;
+import org.perl6.nqp.runtime.ThreadContext;
 import org.perl6.nqp.sixmodel.SixModelObject;
 
 public class CallCaptureInstance extends SixModelObject {
     public CallSiteDescriptor descriptor;
     public Object[] args;
+    
+    public SixModelObject clone(ThreadContext tc) {
+        CallCaptureInstance clone = new CallCaptureInstance();
+        clone.st = this.st;
+        clone.descriptor = this.descriptor;
+        clone.args = this.args.clone();
+        return clone;
+    }
 }