bug#15916: Python indentation broken in latest trunk

[Daniel Colascione]

See this code:

1 class Blag(object):
2     def _on_child_complete(self, child_future):
3         if self.in_terminal_state():
4             pass
5
6         # We only complete when all our async children have entered a
7     # terminal state. At that point, if any child failed, we fail
8 # with the exception with which the first child failed.

The only indentation option python-mode provides for line 7 are the 
above (indented one place) and outdented all the way.  The only option 
for line 8 is outdented all the way. Lines 6, 7, and 8 should line up. I 
don't recall the indenter behaving like this a way weeks ago.