6971706: sun/nio/cs/ext/* classes are duplicated between rt.jar, charsets.jar, and localedata.jar
Reviewed-by: ohair
^build/
^dist/
/nbproject/private/
^src/share/tools/hsdis/build/
^src/share/tools/IdealGraphVisualizer/[a-zA-Z0-9]*/build/
^src/share/tools/IdealGraphVisualizer/build/
^src/share/tools/IdealGraphVisualizer/dist/