Metacat

implemented interface for download of DTD or Schema file from Metacat file system
through the params:
action="getdtdschema"
doctype

added precise location information (class.method) to each catch statement so that errors are more easily traced.

Added license terms to source code files, and cleaned up some javadoc
documentation in a few places.

for getDoctypes() added
WHERE entry_type='DTD' condition in the select statement

change the resultset format for DataGuide

Added "release" keyword to all metacat source files so that the release
number will be evident in software distributions.

doctype attr in xml_index table has been added
so changed the getDataGuide routine to select for paths by given doctype

utility class for reading various of data from db