* Added a 'Log' class to the 'rivwebapi' API.
* Modified the 'ListLogs()' method to use the 'Log' class in the
'rivwebapi' API.
* Added a 'LogLine' class to the 'rivwebapi' API.
* Modified the 'ListLog()' method to use the 'LogLine' class in the
'rivwebapi' API.
Signed-off-by: Fred Gleason <fredg@paravelsystems.com>