Move jackdrc to ~/config according to XDG Standard

[diovudau]

Move jackdrc to ~/config according to XDG Standard, by default.
It is currently in the home directory.

It doesn't need to be a hard transition. With priority lookups, commandline options, environment variables etc.

Other programs done it in the past:
https://wiki.archlinux.org/index.php/XDG_Base_Directory

[nedko]

This feature request could be read, as "reuse jackdbus config file in jackd". Also ~/.jackdrc is actually a commandline executed via execv(), not a config file.

[itaton]

Duplicate of #583

[keithbowes]

This feature request could be read, as "reuse jackdbus config file in jackd". Also ~/.jackdrc is actually a commandline executed via execv(), not a config file.

It doesn't work (you have to . ~/.jackdrc & but it doesn't start automatically when libjack.so is used), so I don't see what it matters where you place it. Perhaps it would make most sense to place it in ~/.local/bin, so that it'll be in your path. BTW, PulseAudio uses startup scripts and they're still placed in $XDG_CONFIG_HOME/pulse.