Cleanups & Implementations to allow IPStack to compile

- IPStack module now compiles (still unusable)
- Added Network Device spec file (tpl_drv_network.h)
- Shuffled definitions between vfs.h and vfs_ext.h
- Added thorough sanity checking to System calls (except IOCtl as
  the driver is the only code that knows what it means)
- Cleaned up makefiles to delete Dumps and Disassemblies
- Added USB core file to tree
- Implemented DRV_IOCTL_LOOKUP and NET_IOCTL_GETMAC in NE2000 driver
  in prepararion for IPStack.