Temporarily use tr1/unordered_map on OS X

src/playlist/playlist.cpp

@@ -62,9 +62,19 @@
 #include <QtDebug>
 
 #include <algorithm>
-#include <unordered_map>
 #include <boost/bind.hpp>
 
+#ifdef Q_OS_DARWIN
+  #include <tr1/unordered_map>
+
+  // I'm sorry...
+  namespace std {
+    using tr1::unordered_map;
+  }
+#else
+  #include <unordered_map>
+#endif
+
 using smart_playlists::Generator;
 using smart_playlists::GeneratorInserter;
 using smart_playlists::GeneratorPtr;