jack: make jack_bufsize adjust the global quantum

Bind to the settings metadata.
Add a property to control if a client will set a temporary or global
quantum whith jack_bufsize.
Make a match rule for jack_bufsize and force a global quantum change.

Fixes #1273

src/daemon/jack.conf.in

@@ -83,6 +83,7 @@ jack.properties = {
      #jack.locked-process    = true
      #jack.default-as-system = false
      #jack.fix-midi-events   = true
+     #jack.global-buffer-size = false
 }
 
 # client specific properties
@@ -102,4 +103,16 @@ jack.rules = [
             }
         }
     }
+    {
+        matches = [
+            {
+                application.process.binary = "jack_bufsize"
+            }
+        ]
+        actions = {
+            update-props = {
+                jack.global-buffer-size = true
+            }
+        }
+    }
 ]