helpers: Improve script portability

Works better on OpenBSD now.

helpers/xfce-do-release

-#!/bin/bash
+#!/usr/bin/env bash
 
 component=$1
 version=$2

helpers/xfce-get-release-notes

@@ -19,6 +19,6 @@ git log --format=%s ${LAST_TAG}..HEAD | \
   grep -v "Back to development" | \
   while read line; do \
     echo "- $line" | \
-    fold -s -w $LINE_LENGTH - | \
+    fold -s -w $LINE_LENGTH | \
     sed -e "s/^[^ ]/&/g"
   done

helpers/xfce-get-translations

-#!/bin/bash
+#!/usr/bin/env bash
 
 # Just a small script to get all language updates to a repository since a
 # commit or tag.
@@ -28,7 +28,7 @@ printf '%s\n' '- Translation Updates:'
 
 LANGUAGES=$(
 for l in $UPDATES; do
-	echo -n "$(grep '^"Language-Team:' po/$l.po | grep -Po '(?<=: ).*' | grep -Po '^(.*)(?= \(http)')"
+	echo -n "$(grep '^"Language-Team:' po/$l.po | sed -e 's/.*: //; s/ (http.*//;')"
 	echo ","
 done
 )
@@ -37,7 +37,7 @@ SORTED=$(echo "$LANGUAGES" | sort)
 SORTED=${SORTED::-1} # remove last comma
 while read line; do
 	echo -n "$line "
-done <<< "$SORTED" | fold -s -w $LINE_LENGTH - | sed -e "s/^[^ ]/${INDENT}&/g" | sed -e 's/[[:space:]]*$//'
+done <<< "$SORTED" | fold -s -w $LINE_LENGTH | sed -e "s/^[^ ]/${INDENT}&/g" | sed -e 's/[[:space:]]*$//'
 echo ""
 
 if [ "$SILENT" != "silent" ]; then