Request for approval : [8u-dev] : (fc) Rename the new jdk.net.enableFastFileTransfer system property to jdk.nio.enableFastFileTransfer

[Seán Coffey]

I'd like to push this trivial change to jdk8u-dev. Same change as JDK 9.

Bug ID : https://bugs.openjdk.java.net/browse/JDK-8068507
JDK 9 changeset : http://hg.openjdk.java.net/jdk9/dev/jdk/rev/bc74cc84c49e
review thread : 
http://mail.openjdk.java.net/pipermail/nio-dev/2015-January/002977.html

regards,
Sean.