6934270: Remove javac warnings from Character.java
Summary: Use generics and conform to coding style
Reviewed-by: sherman
Contributed-by: Ulf Zibis <ulf.zibis@gmx.de>
6963749: Minor improvements to Character.UnicodeBlock
Summary: Fix surrogate area docs; make source more readable
Reviewed-by: okutsu, sherman
Contributed-by: Ulf Zibis <ulf.zibis@gmx.de>