Updates to the Silicon Image and ServerWorks drivers.

News:
* will freeze current codebase as libata 1.0, without queueing support. 
  libata 2.x development has already begun, and will support queueing, 
sata2, and will build upon the existing codebase.
* ServerWorks seems stable, will remove 'beta' label soon

Notes:
* Silicon Image support is still considered to be unstable. 
drivers/ide's siimage.c is preferred.
* Silicon Image users with Seagate SATA, particularly if you know if you 
have the "mod15write" bug, should make sure that the driver is properly 
applying the errata fix.

Patch for 2.4.x:
http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/2.4.25-pre4-libata1.patch.bz2

Patch for 2.6.x:
http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/2.6.1-bk2-libata1.patch.bz2

BK repositories:
bk://gkernel.bkbits.net/libata-2.[45]

Changelog versus 2.6.x mainline attached.