Unicode/ASCII/UTF-8 to UTF-8 command

This function will convert the complete file from Unicode, ASCII or UTF-8 (Unicode representation internally) to UTF-8 encoding.  The file will however not be internally stored as Unicode and as such the multi-byte UTF-8 characters will display as upper ASCII characters and not the UTF-8 character they represent.  When the file is saved it will remain as UTF-8 unless specifically converted to another format by the user.  The status bar will NOT indicate this file format as it has no different structure from an ASCII file.