fix signatures for copy-ctor and assignment for the propertysetmixin classes

the canonic way to disallow copy construction and assignment of an object
is to declare unimplemented methods for them taking const references.

(cherry picked from commit 0fabc9a7)

Conflicts:
	cppuhelper/inc/cppuhelper/propertysetmixin.hxx

Change-Id: I7332d6eedaaf208f64cfe421983171ba436a4050

include/cppuhelper/propertysetmixin.hxx

@@ -156,8 +156,8 @@ protected:
         void notify() const;
 
     private:
-        BoundListeners(BoundListeners &); // not defined
-        void operator =(BoundListeners); // not defined
+        BoundListeners( const BoundListeners&); // not defined
+        void operator=( const BoundListeners&); // not defined
 
         class Impl;
         Impl * m_impl;
@@ -378,8 +378,8 @@ protected:
             com::sun::star::uno::RuntimeException);
 
 private:
-    PropertySetMixinImpl(PropertySetMixinImpl &); // not defined
-    void operator =(PropertySetMixinImpl &); // not defined
+    PropertySetMixinImpl( const PropertySetMixinImpl&); // not defined
+    void operator=( const PropertySetMixinImpl&); // not defined
 
     PropertySetMixinImpl(
         com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext >
@@ -474,8 +474,8 @@ protected:
     ~PropertySetMixin() {}
 
 private:
-    PropertySetMixin(PropertySetMixin &); // not defined
-    void operator =(PropertySetMixin &); // not defined
+    PropertySetMixin( const PropertySetMixin&); // not defined
+    void operator=( const PropertySetMixin&); // not defined
 };
 
 #if defined _MSC_VER