8010935: Better XML handling
8027378: Two closed/javax/xml/8005432 fails with jdk7u51b04
8028382: Two javax/xml/8005433 tests still fail after the fix JDK-8028147
Summary: base fix + fixes for test regressions; fix also reviewed by Maxim Soloviev, Alexander Fomin
Reviewed-by: mchung, mgrebac, mullan