RFR (JAXP): 8035577: Xerces Update: impl/xpath/regex/RangeToken.java

[David Li]

Hi,

This is an update from Xerces for file 
impl/xpath/regex/TokenRange.java.  For details, please refer to: 
https://bugs.openjdk.java.net/browse/JDK-8035577.

Webrevs: http://cr.openjdk.java.net/~joehw/jdk9/8035577/webrev/

New test case was added for code change in RangeToken.intersectRanges.  
Other minor issues from last review comments are updated.

Existing tests: JAXP SQE and unit tests passed.

Thanks,
David