#135 Provide after load codes for DynAPI.

It's very useful to be able to specify code which will
be executed AFTER the DynAPI.onLoad function. The
patch submitted provides this functionality in exactly
the same way the addOnLoadFunction works.

Changed functions are:

DynAPIObject
DynAPIObject.prototype.loadHandler

Added functions are:

DynAPIObject.prototype.addAfterLoadFunction

[Anonymous]

Patched version of dynapi.js to provide functions executing after DynAPI.onLoad.