Metacat

Continued integration of the spataial stuff with the metacat servlet.

Integration of the metacat servlet with the spatial option -- rubberbanding is implemented too.

Implementation of the rubber-bad query that PMARK has implemented through the UI.

metacat spatial option code -- code that produces layers depending on the
metacat transaction.

Got rid of some debugging.

bugfixes to teh previous commit... cleaner exit for the indexing thread

Added a flag for indexing threads so that they exit once Metacat has unloaded.

Added checks for null pointers and changed the name of the config file

Using java.util.Property instead of Options. Options is a singleton class. Hence it cant be used for reading skin property files without changing it into a non-singleton class

Making changes for passing the params to the xsl for skins.