move BatcaveClient into submodule

modules/batcave/__init__.py

@@ -0,0 +1,5 @@
+from .client import BatcaveClient
+
+__ALL__ = [
+    'BatcaveClient'
+]

modules/ffpb.py

@@ -15,12 +15,20 @@ import os
 import random
 import shelve
 import subprocess
+import sys
 import time
 
 import dns.resolver, dns.reversename
 import SocketServer
 import threading
 
+# ensure our directory is on path (in order to load batcave module)
+__my_dir = os.path.dirname(__file__)
+if __my_dir not in sys.path:
+    sys.path.append(__my_dir)
+
+from batcave import BatcaveClient
+
 msgserver = None
 peers_repo = None