RFR: 8024718: Difference in Stream.collect(Collector) methods located in jdk8 and jdk8-lambda repos

[Henry Jen]

Hi,

Please review a simple webrev at

http://cr.openjdk.java.net/~henryjen/tl/8024178/0/webrev/

The reverted change was included as part of JDK-8015318 fix at late
stage, after more thoughts, it is not needed.

As a collector<? super T, A, R> returns a R can be assigned to ? super
R, so we don't really need <? extends R> part.

Cheers,
Henry