[CM] portmidi

[Rick Taube]

> i've still problems with midishare. when i execute the example in the 
> dictionary, i get:

weird, it works just fine for me. i dont understand that error message 
at all!
before going further, please:

1.  check to make sure you do NOT have a ccl/darwin-headers/midishare  
folder. if you do, archive it and then delete that folder

2. delete your existing cffi installation and update to a newer cffi. 
Im using cffi-051229/

3. IMPORTANT: once you install a new CFFI be sure to delete your 
/Applications/lisp/midishare/midishare.dfsl before trying (use-system 
:midishare) again.


then start cm and try again. If you get the same error, please do
	(:b t)
in the error break and send me the full backtrace.

--rick