Get the concat base directory from a fact -> makes it useable if
Puppet's :vardir is not /var/lib/puppet/. This fixes problems with
PE and makes the module also useable for puppet runs as
unpriviledged user.
The concat warn parameter can now be any string (and needs to include
the appropriate commenting character) and will then override the default
(which still gets printed when warn=>true).
Signed-off-by: martin f. krafft <madduck@madduck.net>
