Fix #97: rebind.so not found when installed

This should fix the upstream Debian bug:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=719889

websockify/websocketproxy.py

@@ -55,7 +55,10 @@ Traffic Legend:
         self.wrap_times    = [0, 0, 0]
 
         if self.wrap_cmd:
-            rebinder_path = ['./', os.path.dirname(sys.argv[0])]
+            wsdir = os.path.dirname(sys.argv[0])
+            rebinder_path = [os.path.join(wsdir, "..", "lib"),
+                             os.path.join(wsdir, "..", "lib", "websockify"),
+                             wsdir]
             self.rebinder = None
 
             for rdir in rebinder_path: