Reviewed-by: ant, pchelko
Contributed-by: artem.malinko@oracle.com

Reviewed-by: joehw

8053938: Collections.checkedList(empty list).replaceAll((UnaryOperator)null) doesn't throw NPE after JDK-8047795
Reviewed-by: rriggs, mduigou

Reviewed-by: valeriep

Reviewed-by: coffeys

Reviewed-by: valeriep

8049418: [macosx] PopupMenuListener.popupMenuWillBecomeVisible is not called for empty combobox on MacOS/aqua look and feel
Reviewed-by: anthony, pchelko

Reviewed-by: alanb

8048265: AWT crashes inside CCombinedSegTable::In called from Java_sun_awt_windows_WDefaultFontCharset_canConvert
Reviewed-by: anthony, pchelko, azvegint

Reviewed-by: pchelko, alexsch

Reviewed-by: valeriep

Reviewed-by: naoto, yhuang

8042094: Test javax/swing/JFileChooser/7036025/bug7036025.java fails with java.lang.NullPointerException on Windows x86
Reviewed-by: ahgross, art, pchelko, mschoene

Reviewed-by: psandoz, chegar

Reviewed-by: chegar