MONDRIAN: make ParameterImpl ctor public. This is needed because JPiv…

…ot must create new ParameterExpr() in order to restore expression trees stored in bookmarks. This is similar to MemberExpr() etc which must be created too.

[git-p4: depot-paths = "//open/mondrian/": change = 8051]

src/main/mondrian/olap/ParameterImpl.java

@@ -63,10 +63,10 @@ public void setCachedDefaultValue(Object value) {
       public void setParameterValue(Object value) {
         this.value = value;
       }
-      
+
     };
 
-    protected ParameterImpl(
+    public ParameterImpl(
         String name,
         Exp defaultExp,
         String description,