RFR(JDK 13/java.xml) javax.xml.catalog.CatalogResolverImpl: GroupEntry.matchURI fails to match

[Joe Wang]

Hi,

Please review a fix to the impl for the Catalog. The reporter was right, 
in the Group case, we failed to update the currently longest match when 
a match is found.

JBS: https://bugs.openjdk.java.net/browse/JDK-8215330
webrevs: http://cr.openjdk.java.net/~joehw/jdk13/8215330/webrev/

Thanks,
Joe