[PD] more paths in pd extended

[Georg Holzmann]

Hallo!

> what's wrong with having abstractions in the same directory as the binary?

Yes, I also think that should be the way - as it's also working like 
this with all the other externals ...

> e.g.
> extra/Gem/Gem.pd_linux
> extra/Gem/hsv2rgb.pd
> 
> imho ideally, [import Gem] would find .../Gem/Gem.pd_linux and then add
> .../Gem/ to the search paths.
> 
> (might well be that this is already the case, i don't know)

AFAIK it does not work yet - but it should not be that hard to implement ...

LG
Georg