wine-devel, wine-staging: Allow building on 10.12 and later

[Gcenx]

Description

Upstream wine officially requires macOS Sierra or greater, where as the Winehq macOS packages I maintain require macOS Catalina (10.15.4)

I've tested this on macOS Mojave with MacOSX10.13.sdk and forced deployment target of 10.13 to enable +universal builds. As CodeWeavers developers only test building the i386 slice against MacOSX10.13.sdk I'm making it a requirement. macOS Mojave required the following change #27344

Buildbots won't build for macOS Mojave as it requires forcing MacOSX10.13.sdk & 10.13 deployment target.
Currently macOS High Sierra doesn't have a prebuilt copy of mingw-w64 that's a hard requirement for building wine, it's possible mingw-w64 might build if the macOS High Sierra buildbot was forced to rebuild.

Type(s)

• enhancement

Tested on

macOS 10.14.6
Xcode 11.3.1

Verification

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[Gcenx]

@kencu do you happen to have something that runs macOS Sierra & macOS High Sierra?

It might be nice to figure out the issue with mingw-w64 on macOS High Sierra and also testing if MacPorts rev-upgrade doesn’t cry about the use of MacOSX10.13 on macOS Sierra

[Gcenx]

The Windows Steam Client running under wine

[kencu]

I do have both of those systems, yes. Let me start by trying a build of mingw-w64 and see what happens.