There were some duplicated hex macros in the `address` module as well as
several macros outputing specific types instead of working with any type
deserializable from hex.
This cleanup moves the macros and deduplicates them, introduces a new
`TestFromHex` trait to generalize parsing hex and rewrites the code to
use hex parsing generally. `hex_script` is still kept because its usage
is very frequent.
We just moved the `address` module out of `util` which is currently
ignored by `rustfmt`.
Run `rustfmt`, no other changes other than those made by the tool.
The identifier 'util' does not convey any information. We have a whole
bunch of modules inside the `util` module.
As part of work to reduce the amount of arbitrary things in the `util`
module move the `address` module to the crate root level.
Tobin C. Harding
Martin Habovstiak