dtmail: messages of the 'Mail Retrieval' menu of dtmail were left untranslated.
French, Italian, Spanish translations were added.
vcal2xapia.awk: capacity to handle UTC+n timezones and TODO items added.
When using a non C locale such as fr_FR.ISO8859-1, the CUPS messages
returned by lpq are translated. However, the parser in ParseJobs.C can only
handle messages in English. As a result, dtprintinfo exits immediately with
an error message. To fix that problem we force a LANG=C environment when calling
lpq so that messages will be in English and will be processed correctly by dtprintinfo
parser.