Use C locale in Bash scripts.
Fixes openssl#17228.
# This is the most shell agnostic way to specify that POSIX rules.
POSIXLY_CORRECT=1
+# Force C locale because some commands (like date +%b) relies
+# on the current locale.
+export LC_ALL=C
+
usage () {
cat <<EOF
Usage: release.sh [ options ... ]
