tests/test-execute-bit.t

dirstate: also wrap the new method in `dirstatenonnormalcheck`

The goal of this is to make sure we set the data right, so we need to make sure
it run after the new method, that we actually call, in addition to the old one,
that we no longer call.

Differential Revision: https://phab.mercurial-scm.org/D11343

#require execbit

  $ hg init
  $ echo a > a
  $ hg ci -Am'not executable'
  adding a

  $ chmod +x a
  $ hg ci -m'executable'
  $ hg id
  79abf14474dc tip

Make sure we notice the change of mode if the cached size == -1:

  $ hg rm a
  $ hg revert -r 0 a
  $ hg debugstate
  n   0         -1 unset               a
  $ hg status
  M a

  $ hg up 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  d69afc33ff8a
  $ test -x a && echo executable -- bad || echo not executable -- good
  not executable -- good