[8u] Request for enhancement backport approval for CR JDK-8193830 - Xalan Update: Xalan Java 2.7.2

[Aleks Efimov]

Hello,

Please approve this enhancement backport request for JDK 8u.

Bug:
https://bugs.openjdk.java.net/browse/JDK-8193830

Rational:
This change updates Xalan library that is part of jaxp to new minor 
version. There are no significant changes in 2.7.2 version of Xalan that 
can introduce incompatible changes. The list of changes is limited to 
the following bug fixes:
     XALANJ-2546 xsl:sort lang attribute ignores parameter value, only 
hard-coding works
     XALANJ-2581 Minor performance improvement: Use 
String.lastIndexOf(int) instead of String.lastIndexOf(String).
     XALANJ-2583 org.apache.xml.utils.NodeVector.sort: Fix an averaging 
computation that could overflow for large values.
It is safe and good to have them in JDK8.

The review and approval request for the backported changes can be viewed 
here:
http://mail.openjdk.java.net/pipermail/jdk8u-dev/2018-September/007840.html

Best Regards,
Aleksei