pulseaudio: Disable BlueZ version 4

Do what the Beyond Linux From Scratch instructions do [1].

> --disable-bluez4: This switch disables support for BlueZ version 4 in
> favour of BlueZ version 5 since the latter also installs compatibility
> library for the earlier version.

Note, this doesn’t affect MarIuX64, as the configure script doesn’t
recognize D-Bus – probably because it’s too old –, and therefore BlueZ
is disabled.

```
    Enable D-Bus:                  no
      Enable BlueZ 4:              no
      Enable BlueZ 5:              no
        Enable ofono headsets:     no
        Enable native headsets:    no
```

[1] http://www.linuxfromscratch.org/blfs/view/8.0/multimedia/pulseaudio.html

pulseaudio.be0

@@ -26,9 +26,10 @@ PATCHURL[0]=""
 #    bee_patch "${@}"
 #}
 
-#mee_configure() {
-#    bee_configure
-#}
+mee_configure() {
+    bee_configure \
+        --disable-bluez4
+}
 
 #mee_build() {
 #    bee_build