hg: jdk/sandbox: 2 new changesets

[chris.hegarty at oracle.com]

Changeset: 231fc21356e1
Author:    ihse
Date:      2020-05-15 18:13 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/231fc21356e1

8245093: WSL support broke cygwin toolchain detection
Reviewed-by: erikj

! make/autoconf/basic_tools.m4

Changeset: adab8762e00f
Author:    ihse
Date:      2020-05-15 18:14 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/adab8762e00f

8245096: Better windows environment output in configure
Reviewed-by: erikj

! make/autoconf/basic_windows.m4
! make/autoconf/help.m4