- Update to 3.0.51r22902. This version enables host serial support
and support for bridged and hostonly networking contributed by
Fredrik Lindberg <fli AT shapeshifter.se>.
- Install GuestAdditions in designated directory. 
- Install NLS files in designated directory.
- Add workaround for directory permission problem.
Reported by: Jonathan Chen <jonc AT chen.org.nz> 
On behalf of: vbox@ (decke, dhn, beat, nox)