dirstate.changes() now distinguishes 'hg remove'd or just deleted files. Interface is not yet changed. Non-regular files are considered to be removed or deleted. Removed the unneeded match(fn) call for adding to the unknown list.

+ hg init
+ hg add a
+ hg commit -m first -d 0 0 a
+ hg add sub/b
+ hg commit -m second -d 0 0 sub/b
321
+ hg co 0
cat: sub/b: No such file or directory
ls: sub: No such file or directory