[svn-r11274] Purpose: Additional code improvement

Description:
    Forgot to modify the examples for the "using" declaration changes
    in the library.  Added "using" declaration appropriately.

Platforms tested:
    Linux 2.4 (heping) - very minor

c++/examples/readdata.cpp

@@ -29,6 +29,10 @@
 
 #ifndef H5_NO_NAMESPACE
 using namespace H5;
+#ifndef H5_NO_STD
+    using std::cout;
+    using std::endl;
+#endif  // H5_NO_STD
 #endif
 
 const string FILE_NAME( "SDS.h5" );