Metadata Lookup: conditionally show both Movie and TV results.

When the following are true:

* The item being looked up is a recording/guide item
* The item appears generic or like a movie
* The item has no inetref set

query both the TV and Movie metadata sources and return a list of results for both.  This has a couple of advantages.  The first is that when looking up a generic episode of, say, "Chuck," the old behavior would try the Movie grabber, return some results, and stop.  Instead, in these cases, it's more appropriate to present a list of returns from both results and allow the user to choose.

This also helps with the issue where some clown sets up a metadata record for a TV show at TMDB, and gives the user the opportunity to select the right record from the right metadata source.

All the auto-matching based on year/etc. is still present and functional, and my usual test cases are still automatically matched (Castle, Conan, etc) but with the added bonus of having working auto-match for generic episodes as well.

Nothing for video metadata lookup changes with this commit.  It only affects recordings/MythMetadataLookup.

mythtv/libs/libmythmetadata/metadatadownload.cpp

@@ -94,17 +94,21 @@ void MetadataDownload::run()
                     list = handleTelevision(lookup);
                 else if (!lookup->GetSubtitle().isEmpty())
                     list = handleVideoUndetermined(lookup);
+
+                if (!list.size())
+                    list = handleRecordingGeneric(lookup);
             }
             else if (lookup->GetSubtype() == kProbableMovie)
+            {
                 list = handleMovie(lookup);
+                if (lookup->GetInetref().isEmpty())
+                    list.append(handleRecordingGeneric(lookup));
+            }
             else
-                list = handleRecordingGeneric(lookup);
-
-            if (!list.size() &&
-                (lookup->GetSubtype() == kProbableMovie ||
-                lookup->GetSubtype() == kProbableTelevision))
             {
                 list = handleRecordingGeneric(lookup);
+                if (lookup->GetInetref().isEmpty())
+                    list.append(handleMovie(lookup));
             }
         }
         else if (lookup->GetType() == kMetadataGame)