* 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>
This isn't ready for distribution but allows users of the -git version
of calcurse to easily update their configuration files without having to
edit them manually.
Following things are still missing here:
* A command line parameter to specify a custom data directory.
* A backup file that is created automatically before upgrading.
* Debug output.
Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>
