nautical timezones for DT::TZ

Bonus patch: this adds handling of the nautical single-letter timezone names to DT::TZ::OffsetOnly and DT::TZ. Very simple feature, bound to be useful to someone. -zefram diff -ur dttz-mod1/lib/DateTime/TimeZone/OffsetOnly.pm dttz-mod2/lib/DateTime/TimeZone/OffsetOnly.pm --- dttz-mod1/lib/DateTi

Re: revision of DT::TZ name parsing

Dave Rolsky wrote: >First, I don't want to make these new modules requirements. What I'd >prefer to do is just load them if they exist and use them. No one (that I >recall) has asked for Posix or binary file support, so making them >dependencies seems like overkill. OK. But it seems a pity tha