Bug#743568: module-bluetooth-discover.so has to be manually loaded for bt audio

[Mattia Belluco]

Package: pulseaudio-module-bluetooth
Version: 4.0-6+b1
Arch: amd64

After much tinkering I found out one of the reasons my bluetooth audio 
devs (A2DP and not) were not pairing was due to the module:
module-bluetooth-discover.so.

I use pulseaudio per-user and my default.pa reads:

### Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif

nonetheless the second if doesn't work but the module can be loaded 
manually via

$ pactl load-module module-bluetooth-discover

and once done that everything works (although sometimes connection 
between devices disappear or pulseaudio crashes).