tests/test-extra-filelog-entry.t

py3: avoid using %r format on bytes

Before the patch, the 'b' prefix appeared in the formatted string. Wrapping the
bytes as pycompat.bytestr solves this problem.

Eventually, I think that we should move away from using %r (like 975e517451a6
and 4d6019c0e0ef did), but that would change output of non-ASCII bytes on
Python 2, so we can’t do it on the stable branch. Also, many places continue to
use %r, so it would be a good idea to do the change all at once.

Issue351: mq: qrefresh can create extra revlog entry

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "mq=" >> $HGRCPATH

  $ hg init
  $ hg qinit

  $ echo b > b
  $ hg ci -A -m foo
  adding b

  $ echo cc > b
  $ hg qnew -f foo.diff
  $ echo b > b
  $ hg qrefresh

  $ hg debugindex b
     rev linkrev nodeid       p1           p2
       0       0 1e88685f5dde 000000000000 000000000000