8039915: Wrong NumberFormat.format() HALF_UP rounding when last digit exactly at rounding position greater than 5
Summary: Fixes erroneous rounding in DigitList for corner cases uncovered previously. Adds dedicated unit tests to TieRoundingTest
Reviewed-by: bpb, darcy
Contributed-by: NOlivier Lagneau <olivier.lagneau@oracle.com>

Reviewed-by: alexsch, smarks

Summary: Performance improvements for double/float -> String and decimal/hex String -> double/float conversions.
Reviewed-by: martin, iris
Contributed-by: NSergey Kuksenko &lt;sergey.kuksenko@oracle.com&gt;, Brian Burkhalter &lt;brian.burkhalter@oracle.com&gt;, Dmitry Nadezhin &lt;dmitry.nadezhin@oracle.com&gt;, Olivier Lagneau <olivier.lagneau@oracle.com>

Reviewed-by: darcy
Contributed-by: olivier.lagneau@oracle.com

Reviewed-by: chegar, ksrini

Reviewed-by: lancea, darcy, ulfzibis, iris, naoto, dholmes

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

Reviewed-by: darcy, weijun