test-diffstat: add a glob the test runner wants on Windows

The test gets a '~' status without it.

tests/test-diffstat.t

@@ -1,107 +1,107 b''
   $ hg init repo
   $ cd repo
   $ i=0; while [ "$i" -lt 213 ]; do echo a >> a; i=`expr $i + 1`; done
   $ hg add a
   $ cp a b
   $ hg add b
 
 Wide diffstat:
 
   $ hg diff --stat
    a |  213 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    b |  213 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    2 files changed, 426 insertions(+), 0 deletions(-)
 
 diffstat width:
 
   $ COLUMNS=24 hg diff --config ui.interactive=true --stat
    a |  213 ++++++++++++++
    b |  213 ++++++++++++++
    2 files changed, 426 insertions(+), 0 deletions(-)
 
   $ hg ci -m adda
 
   $ cat >> a <<EOF
   > a
   > a
   > a
   > EOF
 
 Narrow diffstat:
 
   $ hg diff --stat
    a |  3 +++
    1 files changed, 3 insertions(+), 0 deletions(-)
 
   $ hg ci -m appenda
 
   >>> open("c", "wb").write("\0")
   $ touch d
   $ hg add c d
 
 Binary diffstat:
 
   $ hg diff --stat
    c |  Bin 
    1 files changed, 0 insertions(+), 0 deletions(-)
 
 Binary git diffstat:
 
   $ hg diff --stat --git
    c |  Bin 
    d |    0 
    2 files changed, 0 insertions(+), 0 deletions(-)
 
   $ hg ci -m createb
 
   >>> open("file with spaces", "wb").write("\0")
   $ hg add "file with spaces"
 
 Filename with spaces diffstat:
 
   $ hg diff --stat
    file with spaces |  Bin 
    1 files changed, 0 insertions(+), 0 deletions(-)
 
 Filename with spaces git diffstat:
 
   $ hg diff --stat --git
    file with spaces |  Bin 
    1 files changed, 0 insertions(+), 0 deletions(-)
 
 diffstat within directories:
 
   $ hg rm -f 'file with spaces'
 
   $ mkdir dir1 dir2
   $ echo new1 > dir1/new
   $ echo new2 > dir2/new
   $ hg add dir1/new dir2/new
   $ hg diff --stat
    dir1/new |  1 +
    dir2/new |  1 +
    2 files changed, 2 insertions(+), 0 deletions(-)
 
   $ hg diff --stat --root dir1
    new |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
 
   $ hg diff --stat --root dir1 dir2
   warning: dir2 not inside relative root dir1
 
   $ hg diff --stat --root dir1 -I dir1/old
 
   $ cd dir1
   $ hg diff --stat .
    dir1/new |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
   $ hg diff --stat --root .
    new |  1 +
    1 files changed, 1 insertions(+), 0 deletions(-)
 
   $ hg diff --stat --root ../dir1 ../dir2
-  warning: ../dir2 not inside relative root .
+  warning: ../dir2 not inside relative root . (glob)
 
   $ hg diff --stat --root . -I old
 
   $ cd ..