Bug 337002 EPartService leaks previously active part
A reference is kept to the previously active part. This is unnecessary. We only need it to fire events. After the deactivation events have been fired, we should no longer need to keep it lying around.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
testSavePart(ISaveHandler.Save.NO, false, false, true);
	}
	public void testSavePart_NoFalseFalseFalse() {
		testSavePart(ISaveHandler.Save.NO, false, false, false);
	}
	public void testSavePart_CancelTrueTrueTrue() {
		testSavePart(ISaveHandler.Save.CANCEL, true, true, true);
	}
	public void testSavePart_CancelTrueTrueFalse() {
		testSavePart(ISaveHandler.Save.CANCEL, true, true, false);
	}
	public void testSavePart_CancelTrueFalseTrue() {
		testSavePart(ISaveHandler.Save.CANCEL, true, false, true);
	}
	public void testSavePart_CancelTrueFalseFalse() {
		testSavePart(ISaveHandler.Save.CANCEL, true, false, false);
	}
	public void testSavePart_CancelFalseTrueTrue() {
		testSavePart(ISaveHandler.Save.CANCEL, false, true, true);
	}
	public void testSavePart_CancelFalseTrueFalse() {
		testSavePart(ISaveHandler.Save.CANCEL, false, true, false);
	}
	public void testSavePart_CancelFalseFalseTrue() {
		testSavePart(ISaveHandler.Save.CANCEL, false, false, true);
	}
	public void testSavePart_CancelFalseFalseFalse() {
		testSavePart(ISaveHandler.Save.CANCEL, false, false, false);
	}
	private void testSavePart_NoHandler(boolean beforeDirty,