Fix tptserver and tvlserver install rules

Fix tptserver and tvlserver install rules

Commit 00c37e8634b97dba3431804cea467a046be525d5 introduced a few
usages of 'ifeq' in cross-platform Makefiles, breaking the build when
not using GNU make. Fix this by making the tptserver and tvlserver
'install' and 'dest' targets behave more like the 'ptserver' and
'vlserver' ones, and correct the ptserver 'install' target while we
are here.

Change-Id: Ia3fd9149c0f18a96a9899a5dfde41e53a45102b7
Reviewed-on: http://gerrit.openafs.org/2160
Tested-by: Andrew Deason <adeason@sinenomine.net>
Tested-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>