IClassFactory implementation.

Class object registered.
Basic stub for IClassFactory in class OpcClassFactory (not implemented yet).
Removed precompiled headers.
Added registry batch files.

This a hack to allow the minimum test server registry information to be added. It is a hack because the registry operations must be performed programmatically  by the server.

There are 2 batch files, one for registering and one for unregistering the test server.