hg: openjfx/12-dev/rt: 8218424: Use precise scrolling only when supported

[johan at lodgon.com]

Changeset: d1c7e1786e87
Author:    jvos
Date:      2019-02-07 19:40 +0100
URL:       http://hg.openjdk.java.net/openjfx/12-dev/rt/rev/d1c7e1786e87

8218424: Use precise scrolling only when supported
Summary: use different event properties in case external mouse is used on mac
Reviewed-by: prr
Contributed-by: jose.pereda at gluonhq.com

! modules/javafx.graphics/src/main/native-glass/mac/GlassViewDelegate.m