Closed issue by semarie on mblaze repository

https://github.com/leahneukirchen/mblaze/issues/164

Description:
Filenames in `maidir/new` doesn't have maildir info part. The format is `uniq` and not `uniq:info` according to https://cr.yp.to/proto/maildir.html .

But `mlist -i` [skips file entries](https://github.com/leahneukirchen/mblaze/blob/71e2318c810522599e3b9283cef8f26bf51d4d1c/mlist.c#L76) if it doesn't contains `":2,"` substring, resulting ignoring any message in `maildir/new`.

The following commands permits to reproduce the problem:
```sh
# create maildir with few messages
$ mkdir -p maildir/{new,tmp,cur}
$ touch maildir/cur/1325341040.3.localhost:2, maildir/new/1325341040.1.localhost maildir/new/1325341040.2.localhost

$ mlist maildir
maildir/cur/1325341040.3.localhost:2,
maildir/new/1325341040.1.localhost
maildir/new/1325341040.2.localhost

$ mlist -i maildir
     1 unseen    0 flagged       1 msg  maildir
```

`mlist -i` reports only 1 message (instead of 3) and 1 unseen (instead of 3).