Request Approval: 8040837 & 8040747 : Numeric IP Address parsing improvements

[Mike Duigou]

Hello,

Please approve this back-port of the fixes for JDK-8040837 <https://bugs.openjdk.java.net/browse/JDK-8040837> and JDK-8040747 <https://bugs.openjdk.java.net/browse/JDK-8040747> to jdk8-dev:

JDK9 changesets:
  http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/6de4be4b64e7
  http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/30acbdbdb04e

These changes have been "baking" in JDK9 for about two weeks awaiting the backport of the related test fix in JDK-8041621

The JKD8 changesets are identical to the JDK9 changeset.

Build and test is successful.

Thank you,

Mike