Fix %history magics.

Fixes: https://bugs.launchpad.net/ipython/+bug/505343

IPython/core/history.py

@@ -245,11 +245,10 b' class ShadowHist(object):'
 
 
 def init_ipython(ip):
-    # XXX - ipy_completers are in quarantine, need to be updated to new apis
-    #import ipy_completers
-
     ip.define_magic("rep",rep_f)        
     ip.define_magic("hist",magic_hist)            
     ip.define_magic("history",magic_history)
 
+    # XXX - ipy_completers are in quarantine, need to be updated to new apis
+    #import ipy_completers
     #ipy_completers.quick_completer('%hist' ,'-g -t -r -n')

IPython/core/iplib.py

@@ -17,6 +17,7 b' Main IPython Component'
 #-----------------------------------------------------------------------------
 
 from __future__ import with_statement
+from __future__ import absolute_import
 
 import __builtin__
 import StringIO
@@ -1582,6 +1583,9 b' class InteractiveShell(Component, Magic):'
         # Set user colors (don't do it in the constructor above so that it
         # doesn't crash if colors option is invalid)
         self.magic_colors(self.colors)
+        # History was moved to a separate module
+        from . import history
+        history.init_ipython(self)
 
     def magic(self,arg_s):
         """Call a magic function by name.