hg: jdk/sandbox: Merge

[michael.x.mcmahon at oracle.com]

Changeset: 705f982ce635
Author:    michaelm
Date:      2020-02-24 10:18 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/705f982ce635

Merge

- make/autoconf/basics.m4
- make/autoconf/basics_windows.m4