[patch] remove DBusGPendingCall

[Ray Strode]

Hi,

> I do return an opaque pointer; the client code never knows it doesn't
> point to allocated memory.  This way there's no need to define a
> structure, allocate it, etc.  Converting the DBusGProxyCall * pointer
> into a guint will be a very cheap operation, just a few processor cycles
> at most I imagine if any.  If we get to that level of optimization I
> will be very happy :)

You're using the index as a key into a hash table to retrieve a
pointer, yea? I guess my point is, why have the hash table at all? 
Why not just return the pointer in the first place?  What's the
advantage of the extra layer of indirection?

--Ray