thread init callback fixed for macosx. Added envvar JACK_DRIVERS.

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@769 0c269be4-1314-0410-8aa9-9f06e86f4224

configure.in

@@ -15,7 +15,7 @@ dnl                 changes are made
 dnl ---
 JACK_MAJOR_VERSION=0
 JACK_MINOR_VERSION=99
-JACK_MICRO_VERSION=5
+JACK_MICRO_VERSION=6
 
 dnl ---
 dnl HOWTO: updating the jack protocol version

libjack/client.c

@@ -1273,6 +1273,12 @@ jack_client_process_thread (void *arg)
 	jack_client_control_t *control = client->control;
 	int err = 0;
       
+	if (client->control->thread_init) {
+	/* this means that the init callback will be called twice -taybin*/
+		DEBUG ("calling client thread init callback");
+		client->control->thread_init (client->control->thread_init_arg);
+	}
+
 	client->control->pid = getpid();
 	DEBUG ("client process thread is now running");