Changed constuctors to protected so we can derive classes.

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@175154 13f79535-47bb-0310-9956-ffa450edef68

src/xercesc/dom/impl/DOMImplementationImpl.hpp

@@ -81,7 +81,7 @@ class DOMImplementationImpl: public XMemory,
                              public DOMImplementation,
                              public DOMImplementationSource
 {
-private:
+protected:
     DOMImplementationImpl() {};
     DOMImplementationImpl(const DOMImplementationImpl & other) {};
     DOMImplementationImpl & operator = (const DOMImplementationImpl & other) {return *this;};