tests/test-rebuildstate.t

run-tests: be more judicious about bytes vs string on test attrs

This introduces a bname attribute for when we need to use the test
name in a path, and retains name for when we need it as a
string. Sadly, we seem to need both of these.

basic test for hg debugrebuildstate

  $ hg init repo
  $ cd repo

  $ touch foo bar
  $ hg ci -Am 'add foo bar'
  adding bar
  adding foo

  $ touch baz
  $ hg add baz
  $ hg rm bar

  $ hg debugrebuildstate

state dump after

  $ hg debugstate --nodates | sort
  n 644         -1 set                 bar
  n 644         -1 set                 foo

status

  $ hg st -A
  ! bar
  ? baz
  C foo

  $ cd ..