8168972: Editor support: move built-in and external editor support to the jdk repo 8167639: jshell tool: Edit Pad has readability issues Reviewed-by: jlahoda

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.hgtip
^.bridge2
^.jib/
.DS_Store
.metadata/
.recommenders/