Do not install kauth manpages when kauth is disabled

Commit 5afe7a882b0bb90a515e505d9ffce4f644633f06 added a configure
option to disable the installation of the kauth suite, but did not
add any logic to disable the installation of the corresponding man
pages, so those man pages were always installed regardless of the
options to configure.

Add logic to doc/man-pages/Makefile.in to create .noinstall files
for man pages which should not be installed in the current configuration.
Depend on the Makefile (which will be regenerated by configure) in
this target so as to attempt to behave properly if configure is re-run
with different arguments in the same working tree.

Change-Id: I19b77a9f20fe27c49db14f3e800d8c77cda1bb3a
Reviewed-on: http://gerrit.openafs.org/10993
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: D Brashear <shadow@your-file-system.com>