Preliminary support for "from __future__ import generators" to enable
the yield statement.  I figure we have to have this in before I can
release 2.2a1 on Wednesday.

Note: test_generators is currently broken, I'm counting on Tim to fix
this.
diff --git a/Lib/inspect.py b/Lib/inspect.py
index 2d88bc1..6183b0e 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -24,6 +24,8 @@
 
 # This module is in the public domain.  No warranties.
 
+from __future__ import generators
+
 __author__ = 'Ka-Ping Yee <ping@lfw.org>'
 __date__ = '1 Jan 2001'