[PD] open [openpanel] window in the patch folder

[mario buoninfante]

double checked on Linux (Ubuntu Studio 16.04 64bit) as well and [symbol 
./( works, but opens the directory from where Pd has been launched. For 
example if the patch is in "/MyFolder/PdPatch", and you launch the patch 
with Pd closed, then [openpanel] will open there when using [symbol ./(

In case Pd is already open, the path when using [symbol ./( is 
"/home/UserName"

-- 
Electronic Musician, Creative Coder, QA Engineer
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