* Normalize links to docs.rs/CRATE/M.N/...
docs.rs is smart enough to show docs for the latest M.N.P release when
M.N is used in the link. For example:
https://docs.rs/mio/0.6/mio/struct.Poll.html
..will show mio 0.6.14 and later docs. While using the `M.N.*`
(ASTERISK) syntax also works, `M.N` is the more common usage, so
standarize a few existing links to that format.
* Fix missing or malformed rustdoc links
* executor lib rustdoc minor format change
* Promote tokio-threadpool crate level comments to rustdoc
* Replace hidden tokio::executor::thread_pool docs with deprecation note
* Fix typo/simplify util module rustdoc
* Reuse some tokio::executor::thread_pool rustdoc for the crate
Relates to #421
This patch integrate the new timer implementation with the runtime by
initializing a timer per worker thread. This allows minimizing the
amount of synchronization needed for using timers.
Ben Boeckel