hg: jdk8/tl: 8025796: hgforest.sh could trigger unbuffered output from hg without complicated machinations

[mike.duigou at oracle.com]

Changeset: 3f9873789d44
Author:    mduigou
Date:      2013-10-11 15:20 -0700
URL:       http://hg.openjdk.java.net/jdk8/tl/rev/3f9873789d44

8025796: hgforest.sh could trigger unbuffered output from hg without complicated machinations
Reviewed-by: mduigou
Contributed-by: Dmitry Samersoff <dmitry.samersoff at oracle.com>

! common/bin/hgforest.sh