connecting abstraction doesn't work

```
What steps will reproduce the problem?
1. create an object from an abstraction included in aux_patches directory
2. create an object from other abstraction included in aux_patches directory
3. trying to connect them by using connect message

What is the expected output? What do you see instead?
I expect to have a connection between two objects. Instead it doesn't connect
them

What version of the product are you using? On what operating system?
debian testing, pd-extended 0.43-1

With built-in object it works. I'm missing something?
thanks for this helpfull library!
husk

```

Original issue reported on code.google.com by `hus...@gmail.com` on 15 Jul 2012 at 1:55

Start by reproducing the connection steps with two abstractions from the aux_patches directory, using the connect message described in the report. Compare this behavior with a built-in object and trace the relevant connection handling. Done means the two abstraction objects connect as expected, with a regression test if the project provides one.

Written by the indexing model from the issue text.