Add missing LIB_roken references

Add missing LIB_roken references

With the usage of asprintf in libcmd, some more binaries require
libroken to link. Add LIB_roken to their link lines. In src/venus for
the fstrace rule, this causes the HP-UX case to be identical to the
default case, so just remove the HP-UX special case.

Change-Id: Ib4677b17a194cf79742bd5767d3f5cf2442973d3
Reviewed-on: http://gerrit.openafs.org/4590
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementia.org>