setup.py now requires python-daemon 1.4.8

setup.py

@@ -52,7 +52,7 @@ if platform.system() == "Windows":
     I see you are using windows. You will not be able to run celery
     in daemon mode with the --detach parameter.""")
 else:
-    install_requires.append("python-daemon")
+    install_requires.append("python-daemon>=1.4.8")
 
 py_version_info = sys.version_info
 py_major_version = py_version_info[0]