hdf5_ep

[svn-r9069] Purpose:
Update.

Description:
Binh-Minh checked in two new c++ source codes and two new head files.
Add these files to Windows projects.

Solution:
Add H5VarlenType.cpp, H5VarlenType.h, H5ArrayType.cpp, and H5ArrayType.h
to hdf5_cpp and hdf5_cppdll projects in Windows.

Platforms tested:
Visual C++ 6.0 on Windows XP/2000.
(will test with .NET on XP after this check-in).

Misc. update: