Log Message:
openafs: bring the ability to build & install to NetBSD/macppc 10.0_BETA.

I see fertile ground for similar fixes for other archs in this
package.  The 10.0-specific files were copied from the 9.0 files
and minimally modified (actually, the ppc_nbsd100 file was from
the ppc_nbsd20 file).  New ID assigned for NetBSD/macppc 10.0.

No functional testing done: "it builds; ship it!" :)