Make allocparams into pod objects. This makes it easy to serialize,
copy, create and intersect them.
Add convenience macros for properties
Add helper function to collect object properties.
POD (plain old data) objects are similar to LV2 Atoms and allows storage
and construction of datastructures in memory or on the stack. They can
be copied with a simple memcpy.
The idea is to use this to construct the network messages and to replace
the structures used for describing formats and properties.
Move send and dispatch functions to the implementation. This makes it
possible to place an access check before sending and dispatching.
Add module-access that allows to bind and notify on globals owned by
the client.
