Metacat

add option for replicating system metadata (dataone)
https://redmine.dataone.org/issues/1626

Merged in the D1_0_6_2_BRANCH changes that include the transition from ObjectFormat calls to ObjectFormatCache calls.

handle timed replication of system metadata. there are still a few outstanding issues:
-track server location of system metadata-only entries
-replication policy flag for system metadata-only entries?
-locking for replicated entries?
-forced replication of entries

Create replication directory. Move replication code there. Use log4j for replication logging (rollingfileappender). Beef up replication logging and error control.

Removed the release ant token from all files in 'src'.

Merge cvs branch replication to cvs head.