RFR (JAXP): 8036951: Xerces Update: XMLSchemaValidator.java and XMLSchemaLoader.java

[huizhe wang]

Hi,

This patch contains updates to 52 classes, mostly completely updated to 
the trunk except a few. I replaced some obsolete usages (e.g. Vector), 
but not all of them in order to not expand the update into more classes. 
With this patch, the main validation section is updated to the current 
trunk.

New tests were added. Previously added tests were updated. Fixed a few 
test failures caused by later revisions, or difference in the JDK 
implementation with regards to the default settings of 
FEATURE_SECURE_PROCESSING (JDK set the default to true, see 
FeaturePropagationTest.java).

A full-test (JPRT, unit/funtional/TCK tests) passed.

Please review:
https://bugs.openjdk.java.net/browse/JDK-8036951
http://cr.openjdk.java.net/~joehw/jdk9/8036951/webrev/

Thanks,
Joe