kes Add code in catreq.c to reject volumes not marked Enabled.

kes  Add code in catreq.c to reject volumes not marked Enabled.
kes  Add a few more ACL access checks.
kes  Add \n in gnome2-console restore command so that output prints
     nicer -- i.e. lines do not run together.
kes  Fix autolabeling so that it will not mark a volume in error
     if the volume was not actually opened. This should fix bugs
     #737 and 738.
kes  Require tape drive to be open before autolabeling.
kes  Require explicit mount command on non-tapes before autolabeling.
kes  Implement an open_client_db() that searches the keywords for
     either a catolg or client, and opens the appropriate catalog.
     This makes Bacula adjust better to multiple catalogs.
kes  Use more name() methods for resources rather than hdr.name.