Metacat

Updated documentation to reflect new installprocess.

Modified build.xml to properly copy the docs into the distribution, which
required some changes in the ant token filtering scheme.

Improvements to the build process that make it easier to install the DTDs
form EML. There are now three new targets in the build.xml file:

getdtd: uses cvs to get a working copy of a tagged release of eml
  instdtd: copies the DTDs from the build directory to the install directory...

Updated the SQL for loading DTD references to use the correct file
names and paths and identifiers.

updated for new eml release

Added new beta5 version of eml-software dtd, and added to catalog.

Added new DTD files for the new release of EML. Changed the naming
convention for all new DTDs, so the public IDs are now consistently
versioned.

added insert statement for eml-attribute-2.0.dtd entry in xml_catalog

updated with the new eml modules

added new dtds

added the new software module

updated script with new eml20 dtds

fixed error with exception handling in metacat servlet and added new dtds to the sql script

Modifications that change the package handling behavior of metacat. Package
membership is now determined by an identifier being used as either the subject
or object in a triple. One can not request arbitrary returndocs -- only
those types that have package information embedded can be "returndoctype"...

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