[glib] (11 commits) ...Merge branch 'mcatanzaro/posix-spawn2' into 'main'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  ac8d1aa... gspawn: use close_and_invalidate more (*)
  33f15d9... gspawn: Improve error message when dup fails (*)
  e2700c7... gspawn: fix hangs when duping child_err_report_fd (*)
  f9780c6... gspawn: fix fd remapping conflation issue (*)
  7d5bdff... gspawn: Implement fd remapping for posix_spawn codepath (*)
  2a7547f... gsubprocess: ensure we test fd remapping on the posix_spawn (*)
  34de33a... gspawn: Check from errors from safe_dup2() and dupfd_cloexe (*)
  b251a7c... gspawn: add new error message for open() failures (*)
  d4c4867... Add tests for GSubprocess fd conflation issues (*)
  376e291... Add test for child_err_report_fd conflation with target fds (*)
  5462612... Merge branch 'mcatanzaro/posix-spawn2' into 'main'

(*) This commit already existed in another branch; no separate mail sent