[PD] more paths in pd extended

[marius schebella]

Hi,
some libraries (Gem, pdp...) use abstractions. I wonder if their paths 
should be included in the startup paths in pd extended. Or if one should 
create objects with the "Gem" prefix (for example Gem/pix_blobtracker). 
the problem with some abstractions is, that they have also a help patch. 
and rightclick - help then opens the abstraction and not the help patch 
(if the path is included in the default paths). otoh, many helppatches 
and abstractions do not work without the paths given, because they have 
no prefix...
marius.