Remove automake autoconf vars

Remove automake autoconf vars

Commit 4706854f (autoconf: updates and cleanup) removed our invocation
of AM_INIT_AUTOMAKE, which defines the output variables PACKAGE and
VERSION. Several files in our build system are still referencing
@PACKAGE@ and @VERSION@, though, leaving them un-substituted. This
most easily is seen as the AFSVersion version string remaining as
"@VERSION@" when the tree is built without git, but it also affects
some packaging in the tree.

Remove references to @VERSION@ and @PACKAGE@, replacing them with
their autoconf equivalents @PACKAGE_VERSION@ and @PACKAGE_TARNAME@.

Reviewed-on: https://gerrit.openafs.org/13357
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit 2f2c2ce62aa17ecac3651d64c1168af926f7458b)

Change-Id: If2b98b8930bc687170f53f852417fb9374bf6c60
Reviewed-on: https://gerrit.openafs.org/13789
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>