[10] RFR 8134512 : provide Alpha-Numeric (logical) Comparator

[Ivan Gerasimov]

Hello!

It is a proposal to provide a String comparator, which will pay 
attention to the numbers embedded into the strings (should they present).

This proposal was initially discussed back in 2014 and seemed to bring 
some interest from the community:
http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-December/030343.html

In the latest webrev two methods are added to the public API:
j.u.Comparator.comparingNumerically() and
j.u.Comparator.comparingNumericallyLeadingZerosAhead().

The regression test is extended to exercise this new comparator.

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8134512
WEBREV: http://cr.openjdk.java.net/~igerasim/8134512/01/webrev/

Comments, suggestions are very welcome!

-- 
With kind regards,
Ivan Gerasimov