rust-lang/rust — pull request #15373 by omasanori (2014-07-03 16:00:12+00:00)
Title: Fix minor issues in the documentation of libtime.

- When the timezone is UTC, the "zone" field of the RFC 822 format is
"GMT" (or "UT"), not "UTC."
- Although the name of `rfc3999` refers to RFC 3999, the documentation
of it refers only to ISO 8601. This commit adds a description of the
relation between ISO 8601 and RFC 3999.