Break app loader out of Server

[abic]

App setup should be done in a separate plugin manager and not part of the server implementation. Servers should expect to be given an instantiated app on initialization.

[abic]

Considering libpeas but this might be too heavy weight. I'd like to keep both the development of apps and the configuration of app instances as simple as possible.

A nice interface on vsgid might be:

vsgid --setup setup_app_plugin --setup-dir '.'

Where in the current directory is a file setup_app_plugin.so which is a peas plugin with an extension of setup.

The other thing to consider is developing a waf tool to assist in building apps and app configurations.