Metacat

Add more debug messages for the isCNAdmin method.

Put a the systemMetadataChanged method into a queue, so it will not hold the block.

Change updateReplicationMetadata() and setReplicationStatus() to no longer set the dateSysmetaModified date per our discussion on 9/16/15.

Add more debug statement for the updateSystemMetadata method.

In the getLog method, if the event is null, we will set it unknown.

If the event string is null, we will skip this log in the getLog method.

Add the code to check if we can't get the current system metadata from the node in the mn.systemMetadataChanged method.
If we can't find it, an InvalidRequest will be thrown.

Fixed a bug that a client can set the original member node to be null.

Change some exceptions from the InvalidSystem to the InvalidRequest in the updateSystemMetadata method.

rollback: set session.subject so libclient can look up certificate. Seems like the default behavior may have changed?