localrepo: don't search from path

All current callers already pass in the repo root.

This normalizes things a bit. Now all repo types take a direct path to
repo root and only the command line interface (or the dispatcher)
searches from the current directory.

mercurial/cmdutil.py

@@ -255,8 +255,11 b' def dispatch(ui, args):'
     extensions.loadall(ui)
     ui.addreadhook(extensions.loadall)
 
-    # read the local extension info into a local ui object
-    path = earlygetopt(["-R", "--repository"], args) or localrepo.findrepo() or ""
+    # read the local repository .hgrc into a local ui object
+    # this will trigger its extensions to load
+    path = earlygetopt(["-R", "--repository"], args)
+    if not path:
+        path = localrepo.findrepo() or ""
     if path:
         try:
             lui = commands.ui.ui(parentui=ui)
@@ -298,7 +301,7 b' def dispatch(ui, args):'
         repo = None
         try:
             repo = hg.repository(ui, path=path)
-            #ui = repo.ui
+            ui = repo.ui
             if not repo.local():
                 raise util.Abort(_("repository '%s' is not local") % path)
         except hg.RepoError:

mercurial/localrepo.py

@@ -29,12 +29,7 b' class localrepository(repo.repository):'
         self.transhandle = None
     def __init__(self, parentui, path=None, create=0):
         repo.repository.__init__(self)
-        if not path:
-            path = findrepo()
-            if not path:
-                raise repo.RepoError(_("There is no Mercurial repository"
-                                       " here (.hg not found)"))
-
+        self.path = path
         self.root = os.path.realpath(path)
         self.path = os.path.join(self.root, ".hg")
         self.origroot = path