Review Request for JDK-8159420 : The LanguageRange.parse() method is throwing IllegalArgumentException in Turkish Locale

[Nishit Jain]

Hi,

Please review the fix for JDK-8159420
Bug: https://bugs.openjdk.java.net/browse/JDK-8159420
Webrev: http://cr.openjdk.java.net/~nishjain/8159420/webrev.04/

Fix: Changed the toLowerCase() method on language-ranges and 
language-tags to toLowerCase(Locale.ROOT) because characters in language 
range and language tag must always be "a-z" "0-9" or '-'

Regards,
Nishit Jain