timezone support for strftime about time

[afandian]

It looks like named timezones are just ignored in parse.rs. The comment suggests that the C's original strptime is broken.

println!("{}", time::strptime("Tue Jan 01 12:37:48 GMT 2013", "%a %b %d %T %Z %Y").unwrap() == 
               time::strptime("Tue Jan 01 12:37:48 ETC 2013", "%a %b %d %T %Z %Y").unwrap());
=> true

However using time offsets does work

println!("{}", time::strptime("Tue Jan 01 12:37:48 +00:00 2013", "%a %b %d %T %z %Y").unwrap() == 
               time::strptime("Tue Jan 01 12:37:48 +05:00 2013", "%a %b %d %T %z %Y").unwrap());

My workaround's going to be string replacement (for now).

Perhaps there could be another parse function that does what's expected?

[jhpratt]

My current thought is to drop the "support" for %Z in 0.2. That specific formatting option requires knowledge of the actual timezone, not just the offset, and this info isn't stored anywhere. Parsing may happen, though it isn't likely.

[jhpratt]

The minimal support for %Z has been completely dropped for 0.2.

[jhpratt]

Closing in favor of #193, which would include this.