- 32-bit accesses are now disabled for any drive that doesn't return odd

 - 32-bit accesses are now disabled for any drive that doesn't return odd
   words from an IDENTIFY command correctly.
 - Merged ata_Identify() and atapi_Identify() to reduce code duplication.
 - Removed obsolete workaround for phantom slave drives on SATA buses.
 - Use test writes to LBAMid and LBAHigh registers instead of to Count and
   LBALow registers to detect drives, because some ATAPI devices apparently
   don't have all bits of Count register writable.
 - Reduced code duplication in detection of drives.

git-svn-id: https://svn.aros.org/svn/aros/trunk/AROS@31539 fb15a70f-31f2-0310-bbcc-cdcc74a49acc