RFR [14/java.xml] 8233548: Update CUP to v0.11b

[Joe Wang]

Hi,

Please review an update to Java CUP. This is an effort to move to the 
latest version, v0.11b. JCUP is used by Xalan to generate XPathParser. 
Included in the JDK are runtime classes and XPathParser. In CUP 0.11b, 
the main additions to the runtime were SymbolFactory and ComplexSymbol 
that were used to report a bit more details (locations) about the 
parsing process. They were not used by Xalan nor the JDK since the 
benefit of these additions were in error reporting, but Xalan and JDK 
used their own reporting mechanism. I could have removed the JCUP error 
report process altogether, but decided to keep it in case it might be 
used for debugging.

The main change for this update therefore is to the XPathParser itself. 
Since JCUP has been stable, and no major Xalan update in sight, I took 
the liberty to re-format the whole class, plus some cleanup (mainly 
boxing/unboxing), that constitute the changes before the inner class 
parser_actions. Within parser_actions, the main change is that the 0.11b 
fixed the order of the switch block. Other than that, I removed many 
unused variables, and also formatted the long lines.

There were no other material changes. So there's no new test, all 
existing tests (including JCK) passed.

JBS: https://bugs.openjdk.java.net/browse/JDK-8233548
webrevs: http://cr.openjdk.java.net/~joehw/jdk14/8233548/webrev/

Thanks,
Joe