hg: openjfx/9-dev/rt: 8148065: correct whitespace detection tool (again)

[david.hill at oracle.com]

Changeset: c82c973b8100
Author:    ddhill
Date:      2016-01-22 11:31 -0500
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/c82c973b8100

8148065: correct whitespace detection tool (again)
Reviewed-by: kcr

! build.gradle