[jdk8u-dev] RFR: 8087283: Add support for the XML Signature here() function to the JDK XPath implementation

[Andrew John Hughes]

On Mon, 30 May 2022 12:11:43 GMT, Yuri Nesterenko <yan at openjdk.org> wrote:

> I'd like to backport this jdk9 change to jdk8 because it would make backporting future important fixes and related tests easier. It is marked as Enhancement, however with time the absence of it would become nuisance. 
> I've tested it so far with various XML-related tests. Tier tests are running.

What is present in this backport looks ok.  However, there are a couple of omissions from the version in 11u:
* The copyright changes to `jaxp/src/com/sun/org/apache/xpath/internal/compiler/Keywords.java` are missing. Comparing the current 8u & 11u versions show the change is needed.
* This fix actually spans two commits, because it was done under the old split repository / forest setup. The other commit is [b05b9cb](https://github.com/openjdk/jdk11u/commit/b05b9cbefad137c5e2802942de6e77d3994f4315)

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Changes requested by andrew (Reviewer).

PR: https://git.openjdk.java.net/jdk8u-dev/pull/67