CppUnit - C++ port of JUnit Code

* INSTALL-WIN32.txt : added some more infos about DSPlugIn.

* src/msvc6/DSPlugIn/DSPlugIn.rgs: added some registry data
that where missing to register the COM object.

* src/msvc6/DSPlugIn/DSPlugIn.rc: updated some dll version info.

* src/msvc6/DSPlugIn/DSPlugIn.dsp: fixed the custom build step to
register the DLL using regsvr32.exe. Added a post-build step to
copy the dll to the lib/ directory. This prevent a blocking
compilation error if the DLL is in use by VC++.