Fix pthreaded ubik dest and install rules

Fix pthreaded ubik dest and install rules

Fix the dest and install rules for pthreaded ubik, and its servers, so
that they match the current Makefile style.

Change-Id: Ifd3bd181772e278518f2a90167b6524d6045645c
Reviewed-on: http://gerrit.openafs.org/5027
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>