8159690: [TESTBUG] Mark headful tests with @key headful.Reviewed-by: simonis, alexsch
Merge
8150844: [hidpi] [macosx] -Dsun.java2d.uiScale should be taken into account for OS XReviewed-by: serb, avstepan
8137571: Linux HiDPI Graphics supportReviewed-by: flar, serb
8073320: Windows HiDPI Graphics supportReviewed-by: flar, serb