hg: openjfx/9-dev/rt: 8136465: MapProperty.removeListener(changlistener) removes all the listeners not just one

[vadim.pakhnushev at oracle.com]

Changeset: 98e22e3d6bdd
Author:    vadim
Date:      2015-09-23 12:55 +0300
URL:       http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/98e22e3d6bdd

8136465: MapProperty.removeListener(changlistener) removes all the listeners not just one
Reviewed-by: ckyang

! modules/base/src/main/java/com/sun/javafx/binding/MapExpressionHelper.java
! modules/base/src/main/java/com/sun/javafx/binding/SetExpressionHelper.java
! modules/base/src/test/java/test/com/sun/javafx/binding/ListExpressionHelperTest.java
+ modules/base/src/test/java/test/com/sun/javafx/binding/MapExpressionHelperTest.java
+ modules/base/src/test/java/test/com/sun/javafx/binding/SetExpressionHelperTest.java