Tue Apr 30 13:23:13 CEST 2002 ide-clean-48

This fixes the "performance" degradation partially, becouse we don't
miss that many jiffies in choose_urgent_device() anymore.  However
choose_urgent_device has to be fixed for the off by one error to don't
loop for a whole 1/100 second before submitting the next request.

- Include small declaration bits for Jens. (WIN_NOP fix in esp.)

- Fix ide-pmac to conform to the recent API changes.

- Prepare and improve the handling of the request queue. It sucks now as many
   request as possible. This is improving the performance.