[PD] plugin~ external

[Kim Cascone]

I did some testing with the libs
to see which one was making PdX crash when sending [info] and [listplugins]
to the [plugin~] external

I moved all libs out of 'usr/lib/pd/extras/' directory
and moved them back in one at a time
while launching PdX in between each addition

I found the Gem lib was causing the crash
so I did the same testing with the Gem directory
and found that

Gem.pd_linux

was the file in the Gem lib that is making PdX crash
when sending down [info] and [listplugins]
to [plugin~]