Returns a name for the locale that is appropriate for display to the user. This will be the values returned by getDisplayLanguage(), getDisplayScript(), getDisplayCountry(), and getDisplayVariant() assembled into a single string. The the non-empty values are used in order, with the second and subsequent names in parentheses. For example:

language (script, country, variant)
language (country)
language (variant)
script (country)
country

depending on which fields are specified in the locale. If the language, script, country, and variant fields are all empty, this function returns the empty string.

Returns: The name of the locale appropriate to display.