scripts: run all scripts with -e

Run all scripts with -e so they exit as soon as something breaks. That
way the build stops at the first error, not some other error.

Signed-off-by: Anton Lundin <glance@acc.umu.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

Documentation/make_POT.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -e
 #
 # Author(s): Guillaume GARDET <guillaume.gardet@free.fr>
 #

Documentation/make_PO_to_ASCIIDOC.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/bash -e
 #
 # Author(s): Guillaume GARDET <guillaume.gardet@free.fr>
 #