Re: master 2c79a8f 2/2: Use posix_spawn if possible.

[Eli Zaretskii]

I'm sorry, but I reverted this commit and the previous one.  They
broke the MinGW build in fundamental ways, and I cannot afford having
the master branch broken so frequently, definitely not on weekends,
which are the only time I can work seriously on Emacs.

If you cannot make sure Emacs still builds on all supported platforms,
please either post your patches first, or push them to a scratch
branch, and ask people who have access to those platforms to test it
before the changes land on master.

Btw, regarding use of posix_spawn, I'd expect a discussion before we
make such a change.  AFAIU it is not a trivial decision, as
posix_spawn has its down sides, and therefore is not necessarily the
best API for running sub-processes on every supported platform, even
if you consider only the Posix ones.  We should consider the
advantages and disadvantages before we make the decision.

Thanks.