[jdk7u] RFR: 8087283: Add support for the XML Signature here() function to the JDK XPath implementation

[Yuri Nesterenko]

It is a missed part of 8087283 cleanup fix. It has in head the same bug id and synopsis: I hope  Skara jcheck would process it.

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Commit messages:
 - Remove a trailinig whitespace
 - Backport b05b9cbefad137c5e2802942de6e77d3994f4315

Changes: https://git.openjdk.java.net/jdk7u/pull/7/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk7u&pr=7&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8087283
  Stats: 8 lines in 1 file changed: 8 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk7u/pull/7.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk7u pull/7/head:pull/7

PR: https://git.openjdk.java.net/jdk7u/pull/7