streams: remove old code for popen on MingGW.

This is vestigial code from a time when TXR supported being
compiled with MinGW. Except in the case of the functions run
and sh, which are implementable without fork on Cygwin
using the spawn family of functions, there won't be any
fallback; if HAVE_FORK_STUFF is zero or missing, then certain
functions will be absent.

* stream.c (struct stdio_handle): Do not define a pid member
if we don't HAVE_FORK_STUFF.
(se_pclose): Function removed; we won't be using any
non-POSIX platforms popen/pclose.
(pipe_close): Don't call the removed se_pclose.
(make_pipe_stream): Function removed.
(fds_subst, fds_swizzle): Don't define these if
HAVE_FORK_STUFF is absent, and so is HAVE_WSPAWN and HAVE_SPAWN.
They are now only needed by the version of the run function
that uses spawn or wspawn.
(open_command, open_process): Remove the versions of these
function based on popen.
(string_extend_count, win_escape_cmd, win_escape_arg,
win_make_cmdline): Remove these functions used by the above
open_process; we have no need for encoding arguments into a
Windows command line string, since the Cygwin/Cygnal libraries
do that for us in their spawn and exec functions.

* stream.h (make_pipe_stream): Function removed.

* utf8.[ch] (w_popen): Function removed.

0 files changed, 0 insertions, 0 deletions