[svn-r4580]

Purpose:
    Bug fixing
Description:
    + added operator= to PredType
    + removed 'using namespace std' from H5RefCounter.cpp because it's not
        used and leaving it there requires #include some standard header file
    + added 'using namespace std' in H5Exception.cpp

Platforms tested:
    SunOS 5.7 (arabica)
    Windows 98

c++/src/H5Exception.cpp

@@ -5,11 +5,11 @@
 #endif
 
 #include "H5Include.h"
-#include <string>
 #include "H5Exception.h"
 
 #ifndef H5_NO_NAMESPACE
 namespace H5 {
+	using namespace std;
 #endif
 
 // Default constructor

c++/src/H5PredType.cpp

@@ -27,6 +27,13 @@ PredType::PredType( const hid_t predtype_id ) : AtomType( predtype_id )
 // Copy constructor: makes a copy of this PredType object.
 PredType::PredType( const PredType& original ) : AtomType( original ) {}
 
+// Makes a copy of the predefined type and stores the new
+// id in the left hand side object.  
+DataType& PredType::operator=( const PredType& rhs )
+{
+	return(DataType::operator=(rhs));
+}
+
 const PredType PredType::NotAtexit;	// only for atexit/global dest. problem
 
 // Definition of pre-defined types
@@ -461,7 +468,7 @@ void PredType::commit( H5Object& loc, const string& name )
 bool PredType::committed()
 {
    throw DataTypeIException("PredType::committed", "Error: Attempting to check for commit status on a predefined datatype." );
-   return (-1);
+   return (0);
 }  
 
 // Default destructor

c++/src/H5PredType.h

@@ -19,8 +19,7 @@ class PredType : public AtomType {
 	// Copy constructor - makes copy of the original object
 	PredType( const PredType& original );
 
-virtual hid_t getId() const;
-hid_t getenum() const { return id; }  // remove when done
+	virtual hid_t getId() const;
 
 	// Declaration of predefined types; their definition is in Predtype.C
 	static const PredType STD_I8BE;
@@ -225,6 +224,10 @@ hid_t getenum() const { return id; }  // remove when done
 
 	// Creates a pre-defined type using an HDF5 pre-defined constant
 	PredType( const hid_t predtype_id );  // used by the library only
+
+	// Makes a copy of the predefined type and stores the new
+	// id in the left hand side object.  
+	DataType& operator=( const PredType& rhs );
 };
 #ifndef H5_NO_NAMESPACE
 }

c++/src/H5RefCounter.cpp

@@ -2,7 +2,6 @@
 
 #ifndef H5_NO_NAMESPACE
 namespace H5 {
-using namespace std;
 #endif
 
 // Creates a reference counter to be used by an HDF5 object