JDK-8011653: Upgrade to JAXP 1.5

[huizhe wang]

Hi Lance, Alan,

As I mentioned, I'd like to propose an integration of JAXP 1.5 into 
JDK8.  JAXP 1.5 adds a new feature to control connections.

Here's the webrev:
http://cr.openjdk.java.net/~joehw/jdk8/8011653/webrev/

Thanks,
Joe