Simplify and clean up Win32 Cursor implementation#3220

HeikoKlare wants to merge 2 commits intoeclipse-platform:mastereclipse-platform/eclipse.platform.swt:masterfrom

HeikoKlare:cleanup/cursor-win32-simplificationsHeikoKlare/eclipse.platform.swt:cleanup/cursor-win32-simplificationsCopy head branch name to clipboard