[PD] Proposal new default linux desktop config path

[Winfried Ritsch]

This is not urgent and can wait until next version but since already 
discussed, here my proposal:

Like discussed in "[PD] Preferred/best practice for loading external objects" 
thread also config files should be made to freedesktop standard conform
like described in

 https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

from 
$(HOME)/.pdsettings to

(suggestion)
$(HOME)/.config/pd/settings.conf

so configs from one computers home can be copied to another on migration, 
upgrade.

mfG 
 Winfried Ritsch

-- 
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- ao.Univ.Prof. DI Winfried Ritsch 
- ritsch at iem.at - http://iem.at/ritsch
- Institut fuer Elektronische Musik und Akustik
- University of Music and Dramatic Art Graz
- Tel. ++43-316-389-3510 (3170) Fax ++43-316-389-3171 
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