RFR (JAXP) 6211561: XPath.evaluate(String, Object, QName) throws exception if context node is null

[Joe Wang]

Hi,

Please review a javadoc fix for XPath, and the same for XPathExpression. 
Error message is improved to be more relevant.

Please ignore the Lic header for XPATHErrorResources.java, they will be 
handled in the future.

JBS: https://bugs.openjdk.java.net/browse/JDK-6211561
Webrev: http://cr.openjdk.java.net/~joehw/jdk9/6211561/webrev/

Thanks,
Joe