[glib] (3 commits) Non-fast-forward update to branch mcatanzaro/posix-spawn2

[Michael Catanzaro <mcatanzaro src gnome org>]

The branch 'mcatanzaro/posix-spawn2' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  c026c44... gspawn: fix hangs when duping child_err_report_fd
  274de34... gspawn: Implement fd remapping for posix_spawn codepath
  215901f... gsubprocess: ensure we test fd remapping on the posix_spawn

Commits added to the branch:

  70506a6... gspawn: fix hangs when duping child_err_report_fd
  7593b99... gspawn: Implement fd remapping for posix_spawn codepath
  7428385... gsubprocess: ensure we test fd remapping on the posix_spawn