update decode-panic for 10.6

update decode-panic for 10.6

how panics get reported changed in 10.6. also, the 64 bit universal kext
means we don't know what the last boot was.

Reviewed-on: http://gerrit.openafs.org/353
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit a747f5951b920dfb6d77465de6ca8ff54bae1706)
Reviewed-on: http://gerrit.openafs.org/363