maint: update gnulib to latest

Run 'make update-gnulib-to-latest' - thus pulling in 357 commits,
including the following which was also discussed in:
  https://savannah.gnu.org/bugs/?60383
  > test-framework-sh: remove unsafe entries from PATH

* gnulib: Update to latest.
* cfg.mk (local-checks-to-skip): Add and therefore disable sc_indent
as auto indent is too invasive for now.
* m4/mkinstalldirs.m4: Fix repeated word: s/can can/can/.  Reported by
a new rule in sc_prohibit_doubled_word.
* m4/noreturn.m4: Likewise.
* tests/init.sh: Likewise.

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/init.sh b/tests/init.sh
index 9ef83488..a975592f 100755
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -426,6 +426,23 @@ setup_ ()
   for sig_ in 1 2 3 13 15; do
     eval "trap 'Exit $(expr $sig_ + 128)' $sig_"
   done
+
+  # Remove relative and non-accessible directories from PATH, including '.'
+  # and Zero-length entries.
+  saved_IFS="$IFS"
+  IFS=:
+  new_PATH=
+  sep_=
+  for dir in $PATH; do
+    case "$dir" in
+      /*) test -d "$dir/." || continue
+          new_PATH="${new_PATH}${sep_}${dir}"
+          sep_=':';;
+    esac
+  done
+  IFS="$saved_IFS"
+  PATH="$new_PATH"
+  export PATH
 }
 
 # This is a stub function that is run upon trap (upon regular exit and