RFR: 8248817: Windows: Improving common cross-platform code

[Kim Barrett]

> On Jul 16, 2020, at 6:00 PM, Ludovic Henry <luhenry at microsoft.com> wrote:
> 
> I've upload these latest changes to http://cr.openjdk.java.net/~burban/luhenry/8248817-atomics/webrev.04

The change from "StubName" => "IntrinsicName" made the indenting of
arguments in the calls no longer lined up normally. Line 65, line 82,
and lines 104-5 are now abnormally indented.

Other than that, looks good.  I don't need another webrev for a fix of
the indentation.