-updated liquidsoap scripts + library to be liquidsoap-beta2 compliant

python_apps/pypo/liquidsoap_scripts/library/tests/LS460.liq

@@ -0,0 +1,17 @@
+# Scenario:
+#  Let foo start using q, then stop it, skip in q.
+#  When foo restarts it doesn't know that q isn't ready anymore,
+#  which can lead to a crash.
+
+q = once(sine(duration=10.))
+output.dummy(id="bar",mksafe(q))
+output.dummy(id="foo",fallback([amplify(1.,q),blank(duration=1.)]))
+
+def at(t,s)
+  add_timeout(t,{ignore(server.execute(s));(-1.)})
+end
+
+at(3.,"foo.stop")
+at(4.,"bar.skip")
+at(5.,"foo.start")
+add_timeout(6.,{print("TEST PASSED");shutdown();(-1.)})