Added new files to VS project.

Hopefully fixed the Read/asString bugs.  Niflyze can now read and output strings for all Morrowind files.

Another fix for generated template.

Moved all generated files to gen sub directory.
Renamed some generated files.

Added destructor which decrements reference count on any referenced object.

Made niflib more verbose: prints blocks as it reads the NIF file (helps identifying buggy blocks); fixed output of bytes.

Fixed something I broke on last commit + another update to XML in ByteArray: niflyze now reads Oblivion files :-)