web: include all files in the diffstat
The webutil.diffstat function now returns a diffstat template for each file
in the diff. It previously returned a template for each file returned by
ctx.files() which did not work well for merge changesets.
$ hg init
$ touch unknown
$ touch a
$ hg add a
$ hg ci -m "1"
$ touch b
$ hg add b
$ hg ci -m "2"
Should show unknown
$ hg status
? unknown
$ hg revert -r 0 --all
removing b
Should show unknown and b removed
$ hg status
R b
? unknown
Should show a and unknown
$ ls
a
unknown