RFR (JAXP) : 8015092 : SchemaFactory cannot parse schema if whitespace added within patterns in Selector XPath expression

[huizhe wang]

Hi,

This is a quick conformance fix to allow whitespace in xpath expression 
such as '. //.'.

http://cr.openjdk.java.net/~joehw/jdk8/8015092/webrev/

Thanks,
Joe