tests/test-revlog-ancestry.py.out

help: give hint about 'hg help -e' when appropriate

The hint is only given if a command shadows an extension with the same
name and when that extension has a multi-line module docstring.

Ancestors of 5
4 2 0 
Ancestors of 6 and 5
3 4 2 1 0 
Ancestors of 5 and 4
4 2 0 

Descendants of 5
7 8 
Descendants of 5 and 3
6 7 8 
Descendants of 5 and 4
5 7 8