8146458: Improve exception reporting for Objects.checkIndex/checkFromToIndex/checkFromIndexSize
Reviewed-by: jrose, smarks

8135248: Add utility methods to check indexes and ranges
Reviewed-by: forax, chegar, scolebourne, jrose, darcy

8054834: Modular Source Code
Reviewed-by: alanb, chegar, ihse, mduigou
Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, chris.hegarty@oracle.com, erik.joelsson@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, magnus.ihse.bursie@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, paul.sandoz@oracle.com