* Defined a set of standard exit code defines starting with
'RD_EXIT_' in 'lib/rd.h'.
* Regularized the exit codes returned by rdlogmanager(1).
* Cleaned up error handling when using rdlogmanager(1) in
command line mode.
* Fixed a bug in rdlogmanager(1) that could leave a log lock
asserted after exiting when handling schedule import errors.
Signed-off-by: Fred Gleason <fredg@paravelsystems.com>