repo.status: also compare flags for files in the lookup list.
We might be able to do something smarter about this in dirstate.status
for files in normallookup state, but that would require some extra
care to keep backwards compatibility.
% basic
% unknown
*** [alias] unknown: command bargle is unknown
% ambiguous
*** [alias] ambiguous: command s is ambiguous
% recursive
*** [alias] recursive: circular dependency on recursive
adding foo
% with opts
C foo