Summary: Minor code changes to cleanup warnings in java.util.*
Reviewed-by: mduigou, naoto, smarks
Contributed-by: NRemi Forax <forax@univ-mlv.fr>

Reviewed-by: lancea, naoto

Summary: to use new InternalError constructor with cause chainning
Reviewed-by: alanb, ksrini, xuelei, neugens
Contributed-by: sebastian.sickelmann@gmx.de

7029740: (lc) New Locale class implementation doesn't follow the Java coding conventions
7032820: (lc) sun.util.locale.InternalLocaleBuilder.CaseInsensitiveChar.equals problems
7033503: (lc) Restore optimization code for Locale class initialization
7033504: (lc) incompatible behavior change for ja_JP_JP and th_TH_TH locales
Reviewed-by: naoto

Reviewed-by: okutsu

Reviewed-by: srl
Contributed-by: NYoshito Umaoka &lt;y.umaoka@gmail.com&gt;, Doug Felt &lt;dougfelt@google.com&gt;, Mark Davis <markdavis@google.com>

Reviewed-by: darcy, weijun