hg: jdk/sandbox: Merge

[magnus.ihse.bursie at oracle.com]

Changeset: aa6a2a6bedbd
Author:    ihse
Date:      2020-02-24 11:02 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/aa6a2a6bedbd

Merge

! make/autoconf/basic.m4
! make/autoconf/basic_tools.m4
! make/autoconf/basic_windows.m4
! make/autoconf/configure.ac
! make/autoconf/toolchain.m4
! make/autoconf/util.m4
! make/autoconf/util_paths.m4
! make/autoconf/util_windows.m4