Put the datatype library in a JAR archive
Include a
META-INF/services/org.relaxng.datatype.DatatypeLibraryFactory
file that contains the name of the class that implements the
org.relaxng.datatype.DatatypeLibraryFactory interface
Add the .jar file to the CLASSPATH
Add the MSV/Jing .jar file to the CLASSPATH (Runnable archives don't work)