8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
Reviewed-by: mchung, darcy
Contributed-by: amy.lu@oracle.com

7092404: Add Math.nextDown and Double.isFinite
Reviewed-by: mduigou

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

6908131: Pure Java implementations of StrictMath.floor(double) & StrictMath.ceil(double)
Reviewed-by: alanb