'inspect' was not listing the functions in a module properly if the module was

reached through a symlink (was comparing path of module to path to function and
were not matching because of the symlink).  os.path.realpath() is now used to
solve this discrepency.

Closes bug #570300.  Thanks Johannes Gijsbers for the fix.

Lib/inspect.py

@@ -380,7 +380,9 @@ def getmodule(object):
         return sys.modules.get(modulesbyfile[file])
     for module in sys.modules.values():
         if hasattr(module, '__file__'):
-            modulesbyfile[getabsfile(module)] = module.__name__
+            modulesbyfile[
+                os.path.realpath(
+                        getabsfile(module))] = module.__name__
     if file in modulesbyfile:
         return sys.modules.get(modulesbyfile[file])
     main = sys.modules['__main__']