NetBSD partition ID

[Matthias Drochner <drochner%zelux6.zel.kfa-juelich.de@localhost>]

I've just changed sbin/fdisk to set the partition type to
"DOSPTYP_NETBSD" which should be a machine
dependant definition.
It doesn't exist yet on PowerPC, fdisk will not compile.
Before I add it: Do you want to stick with the 0xa5 or
do you want to use the "0xa9", like i386, in the future?

best regards
Matthias