Add https://github.com/4thline/cling client detection requiring FLAG_MS_PFS

clients.c

@@ -54,6 +54,13 @@ struct client_type_s client_types[] =
 	  EXAVClientInfo
 	},
 
+	{ ECling,
+	  FLAG_MS_PFS,
+	  "Cling",
+	  "Cling/",
+	  EUserAgent
+	},
+
 	/* User-Agent: DLNADOC/1.50 SEC_HHP_[PC]LPC001/1.0  MS-DeviceCaps/1024 */
 	/* This is AllShare running on a PC.  We don't want to respond with Samsung
 	 * capabilities, or Windows (and AllShare) might get grumpy. */

clients.h

@@ -56,6 +56,7 @@ enum match_types {
 enum client_types {
 	EXbox = 1,
 	EPS3,
+	ECling,
 	EDenonReceiver,
 	EDirecTV,
 	EFreeBox,