6934265: Add public method Character.isBmpCodePoint
Summary: Move isBmpCodePoint from sun.nio.cs.Surrogate to Character
Reviewed-by: sherman
Contributed-by: Ulf Zibis <ulf.zibis@gmx.de>

6943119: Rebrand source copyright notices
Reviewed-by: darcy, weijun

6920732: opensource test/java/nio/charset
Summary: move the test cases to openjdk
Reviewed-by: martin