Fix zope profile extension.

Note that this extension is now in deathrow pending update to the new apis,
but I don't want it to go out of sync as this fix was committed to 0.10.1
branch.

Closes: https://bugs.launchpad.net/ipython/+bug/443972

IPython/deathrow/ipy_profile_zope.py

@@ -24,6 +24,8 b' import sys'
 import os
 import textwrap
 
+sys_oldstdin  = sys.stdin
+
 # The import below effectively obsoletes your old-style ipythonrc[.ini],
 # so consider yourself warned!
 # import ipy_defaults
@@ -314,6 +316,7 b' def main():'
         """ % ( ",".join([ x for x in dir(zope_debug.utils) if not x.startswith("_") ] ) ) )
 
 
+    sys.stdin  = sys_oldstdin
     ip.user_ns.update( zope_debug.namespace )