Add localization to calcurse-upgrade

* Use gettext in "scripts/calcurse-upgrade".

* Add "scripts/calcurse-upgrade" to "po/POTFILES.in".

* Rename "scripts/calcurse-upgrade" to "scripts/calcurse-upgrade.sh" to
  make sure xgettext(1) detects the correct input file format.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

po/POTFILES.in

@@ -16,3 +16,5 @@ src/utils.c
 src/vars.c
 src/wins.c
 src/dmon.c
+
+scripts/calcurse-upgrade.sh

scripts/Makefile.am

@@ -1,3 +1,13 @@
 AUTOMAKE_OPTIONS = foreign
 
-dist_bin_SCRIPTS = calcurse-upgrade
+dist_bin_SCRIPTS = \
+	calcurse-upgrade
+
+EXTRA_DIST = \
+	calcurse-upgrade.sh
+
+CLEANFILES = \
+	calcurse-upgrade
+
+calcurse-upgrade: calcurse-upgrade.sh
+	$(AM_V_GEN) $(INSTALL) $< $@

scripts/calcurse-upgrade.sh

@@ -1,5 +1,7 @@
 #!/bin/sh
 
+export TEXTDOMAIN='calcurse'
+
 set -e
 
 if [ "$1" = "--config" ]; then
@@ -9,7 +11,7 @@ else
 fi
 
 if [ ! -e "$CONFFILE" ]; then
-  echo "Configuration file not found: $CONFFILE" >&2
+  echo "$(gettext "Configuration file not found:") $CONFFILE" >&2
   exit 1
 fi
 
@@ -22,12 +24,12 @@ if grep -q -e '^auto_save=' -e '^auto_gc=' -e '^periodic_save=' \
   -e '^notify-all=' -e '^output_datefmt=' -e '^input_datefmt=' \
   -e '^notify-daemon_enable=' -e '^notify-daemon_log=' "$CONFFILE"; then
 
-  echo "Pre-3.0.0 configuration file format detected..."
+  echo "$(gettext "Pre-3.0.0 configuration file format detected...")"
 
   tmpfile="${TMPDIR:-/tmp}/calcurse-upgrade.$!"
   [ -e "$tmpfile" ] && exit 1
 
-  echo -n "Upgrade configuration directives..."
+  echo -n "$(gettext "Upgrade configuration directives...")"
 
   sed -e 's/^auto_save=/general.autosave=/' \
     -e 's/^auto_gc=/general.autogc=/' \
@@ -89,6 +91,6 @@ if grep -q -e '^auto_save=' -e '^auto_gc=' -e '^periodic_save=' \
   mv "$tmpfile" "$CONFFILE"
 
   echo -n ' '
-  echo 'done'
+  echo "$(gettext 'done')"
 fi