Set backend to auto and recommends python-gamin (Closes: #524425)

debian/control

@@ -14,8 +14,8 @@ Standards-Version: 3.9.1
 Package: fail2ban
 Architecture: all
 Depends: ${python:Depends}, ${misc:Depends}, lsb-base (>=2.0-7)
-Recommends: iptables, whois
-Suggests: python-gamin, mailx
+Recommends: iptables, whois, python-gamin
+Suggests: mailx
 XB-Python-Version: ${python:Versions}
 Description: ban hosts that cause multiple authentication errors
  Fail2ban monitors log files (e.g. /var/log/auth.log,

debian/jail.conf

@@ -26,7 +26,7 @@ maxretry = 3
 # options are "gamin", "polling" and "auto".
 # yoh: For some reason Debian shipped python-gamin didn't work as expected
 #      This issue left ToDo, so polling is default backend for now
-backend = polling
+backend = auto
 
 #
 # Destination email address used solely for the interpolations in