Fixed out-of-tree builds.

Fixed out-of-tree builds.

The problems were
* wrong location of Makefile.version-CML
* lots of omissions of "$?" in favor of actual file names in Makefiles
* wrong dependencies in pam/Makefile.in

The latter now point to TOP_INCDIR. Still, ktc.c could not be built
from src/pam (buildtree), as include "..." would not work on generated
headers. Therefore, it uses include <...> where appropriate now.

Reviewed-on: http://gerrit.openafs.org/http://gerrit.openafs.org/155
Tested-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>