bug: not canonilizing paths?

[Soh Tk-r28629]

> > hg clone http://www.selenic.com/hg my-hg
> > cd my-hg
> > hg pull http://www.serpentine.com/hg
> > hg update -m
> > grep makewalk mercurial/commands.py
> 
> Something very strange here, I clone both master and BOS repos, but
> couldn't find makewalk until I merge BOS into master. What's going on?

BTW, when it does work, I noticed the following:
 
% hg add sub/sub2.c
% hg add sub/sub2.c
sub/sub2.c already tracked!
% hg add ./sub/sub2.c   ## why no complains here? ##
% hg add sub/sub2.c
sub/sub2.c already tracked!