RFR: 8035584 : (s) ArrayList(c) should avoid inflation if c is empty

[Mike Duigou]

Hello all;

Revisiting this issue again at long last I have updated the proposed changeset 
based upon Jason Mehren's most recent feedback.

http://cr.openjdk.java.net/~mduigou/JDK-8035584/4/webrev/

This version reverts the prior changes to toArray().

Mike