[m-rev.] For review by Peter: Fix cross compiler config: static MXE target

[Peter Wang]

On Sun, 24 Apr 2022 17:51:17 +0200 Dirk Ziegemeyer <dirk at ziegemeyer.de> wrote:
> Hi Peter,
> 
> could you please review and commit the attached patch.
> 
> I ran into an error while configuring Mercury 22.01.1 as cross compiler on MacOS Catalina for the Windows target x86_64-w64-mingw32.static.
> 
> @Julien:
> Would you please consider adding it to 22.01.2.

Thanks, I've applied it to master.

Peter