[svn-r15404] Purpose: Code correction

Description:
    Accidentally left p_setId in public section in the previous checkin.
    Moved it to "protected:" section.

Platforms tested:
    Linux 2.6 (kagiso)
    SunOS 5.10 (linew)
    FreeBSD (duty)

c++/src/H5DataSet.h

@@ -99,7 +99,6 @@ class H5_DLLCPP DataSet : public H5Object, public AbstractDs {
 
         // Gets the dataset id.
         virtual hid_t getId() const;
-        virtual void p_setId(const hid_t new_id);
 
 	// Destructor: properly terminates access to this dataset.
 	virtual ~DataSet();
@@ -112,6 +111,10 @@ class H5_DLLCPP DataSet : public H5Object, public AbstractDs {
         // defined in AbstractDs for generic datatype and specific
         // sub-types
 	virtual hid_t p_get_type() const;
+
+   protected:
+        // Sets the dataset id.
+        virtual void p_setId(const hid_t new_id);
 };
 #ifndef H5_NO_NAMESPACE
 }