Merge

8032078: [macosx] CPlatformWindow.setWindowState throws RuntimeException, if windowState=ICONIFIED|MAXIMIZED_BOTH Reviewed-by: pchelko, serb

8034085: Do not prefer indexed properties Reviewed-by: alexsch

8035310: The line.separator property can be retrieved via public API Reviewed-by: alexsch, serb

8034998: Fix raw and unchecked lint warnings in javax.imageio Reviewed-by: prr, darcy

8035341: Allow using a system installed libpng Reviewed-by: andrew, erikj, ihse, serb

8035287: gcc warnings compiling various libraries files Reviewed-by: prr

8034038: [parfait] JNI exception pending in macosx/native/sun/awt/CDataTransferer.m Reviewed-by: serb, azvegint

8035147: [macosx] Drag and Drop tests are failing with -Xchech:jni Reviewed-by: serb, azvegint

8034035: [parfait] JNI exception pending in jdk/src/macosx/native/sun/awt/LWCToolkit.m Reviewed-by: serb, azvegint

8017456: [TEST_BUG] java/awt/DataFlavor/MissedHtmlAndRtfBug/MissedHtmlAndRtfBug.html: test frames remain after test execution Reviewed-by: serb, alexsch

8034068: Label.toString performance improvement Reviewed-by: anthony, art

7094099: DropDown List of JComboBox detached Reviewed-by: alexp, alexsch

8029960: Remove reflection from Swing classes Reviewed-by: serb, pchelko

8034164: Introspector ignores indexed part of the property sometimes Reviewed-by: alexsch

8031971: Use only public methods in the SwingLazyValue Reviewed-by: serb, pchelko