Context
The core.php or config.php files in Xen and Pluton tend to provide
the ability to build URLs relative to the server.
To help to do so, we provide an URL class implementation with
understanding of protocol, domain and query part.
Implementation
IDN are supported.
By default, queries are encoded excepted for / ~ . - _ characters.
OmniArray and OmniString
This change introduces OO-variants of map, implode, explode
to handle the "encode everything excepted slashes" task.