- Fix small typo introduced in 113, which prevented CD-ROMs from
   working altogether.

- Eliminate block_ioctl(). This code can't be shared in the way
   proposed by this file. We will port it to the proper
   blk_insert_request() soon. This will eliminate the _elv_add_request()
   "layering violation".

- Don't play IRQ wreck havoc in ata_dump().

- Fix delays on seeks in ide-cd.c

- Integrate special_intr() and tcq_nop_intr() in to one single IRQ
   handler. This way we don't have to kmalloc anything for sending a NOP
   to the drive in TCQ.

- Eliminate the usage of the XXX_handler from the ata_taskfile
   structure. Now we always deduce which handler will be needed from
   the command which will be executed. This makes the usage of the
   channel IRQ handler pointer much more cleaner now.

- Don't pass taskfiles through rq->special. Pass them through rq->cmd[]
   as every other block device does or at least should do. This way
   we don't pass pointers to structures on local stack around any more.

- pdc4030 code doesn't have anything to do with the normal taskfile
   stuff.