[pd] shell and ongoing processes

[=?X-UNKNOWN?Q?g=FCnter_geiger?=]

Hi Yves,

this is great, thank you for the patch, I had the zombie thing fixed some
days ago, but I think the patch didnt make it to the list and I haven't
put a new version of ggee on the web.

Didn't realize the float problem though, ....

There were other things I wanted to add to shell, in order to use it
as a general script interpreter within pd, ...
like starting a perl script etc.
for this it needs communication through shell inlet and the stdio
of the scripting process.

Greetings,

Guenter