tests: unify test-dirstatedirs

tests/test-dirstate.t

@@ -1,11 +1,17 b''
-#!/bin/sh
+Test dirstate._dirs refcounting:
 
-# test dirstate._dirs refcounting
-hg init t
-cd t
-mkdir -p a/b/c/d
-touch a/b/c/d/x
-touch a/b/c/d/y
-touch a/b/c/d/z
-hg ci -Am m
-hg mv a z
+  $ hg init t
+  $ cd t
+  $ mkdir -p a/b/c/d
+  $ touch a/b/c/d/x
+  $ touch a/b/c/d/y
+  $ touch a/b/c/d/z
+  $ hg ci -Am m
+  adding a/b/c/d/x
+  adding a/b/c/d/y
+  adding a/b/c/d/z
+  $ hg mv a z
+  moving a/b/c/d/x to z/b/c/d/x
+  moving a/b/c/d/y to z/b/c/d/y
+  moving a/b/c/d/z to z/b/c/d/z
+