Thanks to Larry for putting in a lot of effort with this RFC.
I would like to think this RFC provides a solution to a legitimate
1. It will allow the logical grouping of related classes and symbols
within namespaces, as is considered best practice in userland. So far as
naming goes, there is no reason to believe what is applicable to
userland is not equally applicable to php-src and its extensions.
2. It will prevent us needing to "fake" namespaces by prefixing future
symbols with Php or the extension name.
3. It provides for bundling and unbundling extensions without the need
to change symbols.