bug#35410: 27.0.50; 32-bit build of master failing with MSYS2

[Noam Postavsky]

martin rudalics <rudalics@gmx.at> writes:

>>> w32.o:w32.c:(.text+0xa29f): undefined reference to `_imp___futime32'
>>> collect2.exe: error: ld returned 1 exit status
>>> make[1]: *** [Makefile:643: temacs.exe] Fehler 1
>>> make[1]: Verzeichnis „/c/emacs/trunk/opt-32/src“ wird verlassen
>>> make: *** [Makefile:423: src] Fehler 2
>>>
>>> A build configured with CFLAGS='-O0 -g3' proceeds without problems.
>>> The 32-builds use gcc 7.4.0.  64-bit builds with the same options
>>> proceed without problems using gcc 8.3.0.
>>
>> Seems to work okay here, but my ming32 gcc is 7.2.0.

Hmm, I tried updating, but now my mingw32 gcc is 9.1.0, and it still
builds fine.  I'm not sure if it's practical to support old compiler
versions from a rolling release.