Metacat

My thoughts on the metacat spatial architecture.

Minor documentation fix. buildindex action should be all lowercase.

Minor edits to installation instructions for Metcat 1.5.0.

Fix documentation bug. The documentation said that the operator name was INTERSECTION, but the actual name is INTERSECT.

Changes in the documentation for the new release

Updated install instructions with IPv6 instructions for postgres.

Changed default maxHarvests value to 0. Added logic to ignore maxHarvests value when it is set to 0 or a negative number. This allows Harvester to run indefinitely without shutting down after reaching a maximum number of harvests. The previous default value of 30 would cause Harvester to terminate after 30 harvests.

Updated the diagram with terminology that is consistent with the current harvester design.

Modify Harvester documentation to provide instructions for configuring and running Harvester as a servlet.

Minor enhancement to support multiple email addresses for harvester administrator and site contact. Each address is separated by a comma or semicolon.