vs unidirectional transfer modes. The kernel handles hardware, user mode
programs shouldn't get in the way.
This cleans up some really ugly grots that I hated too. :-)
Suggested by: Sujal Patel <smpatel@wam.umd.edu>
* warning: this user interface is still in flux pending negotiations
* with other quickcam driver authors. It is _not_ compatible with the
* original linux interface due to the fact that it was too restrictive.
