[threeten-dev] Please review INSTANT_COMPARATOR fix

[roger riggs]

Hi,

Please review this fix for the issue Patrick found [1] with 
OfffSetDateTime.INSTANT_COMPARATOR.

http://cr.openjdk.java.net/~rriggs/webrev-instant-comparator-8014939/

I also noticed that the compareTo methods inconsistently use direct 
arithmetic
and Integer.compare to compute the return values.  The webrev includes
updates to consistently use Integer.compare.

Thanks, Roger

[1] http://mail.openjdk.java.net/pipermail/threeten-dev/2013-May/001401.html