pathutil: demote two local functions to just be forwards

We retain the forwards because it helps code be more ignorant of
implementation details, but use forwards instead of our own method
definitions since we don't need any truly custom behavior for now.

mercurial/pathutil.py

@@ -188,52 +188,8 b' def normasprefix(path):'
     else:
         return path
 
-def join(*args):
-    '''Join two or more pathname components, inserting '/' as needed.
-
-    Based on the posix os.path.join() implementation.
-
-    >>> join('foo', 'bar')
-    'foo/bar'
-    >>> join('/foo', 'bar')
-    '/foo/bar'
-    >>> join('foo', '/bar')
-    '/bar'
-    >>> join('foo', 'bar/')
-    'foo/bar/'
-    >>> join('foo', 'bar', 'gah')
-    'foo/bar/gah'
-    >>> join('foo')
-    'foo'
-    >>> join('', 'foo')
-    'foo'
-    >>> join('foo/', 'bar')
-    'foo/bar'
-    >>> join('', '', '')
-    ''
-    >>> join ('foo', '', '', 'bar')
-    'foo/bar'
-    '''
-    return posixpath.join(*args)
-
-def dirname(path):
-    '''returns the directory portion of the given path
-
-    Based on the posix os.path.split() implementation.
-
-    >>> dirname('foo')
-    ''
-    >>> dirname('foo/')
-    'foo'
-    >>> dirname('foo/bar')
-    'foo'
-    >>> dirname('/foo')
-    '/'
-    >>> dirname('/foo/bar')
-    '/foo'
-    >>> dirname('/foo//bar/poo')
-    '/foo//bar'
-    >>> dirname('/foo//bar')
-    '/foo'
-    '''
-    return posixpath.dirname(path)
+# forward two methods from posixpath that do what we need, but we'd
+# rather not let our internals know that we're thinking in posix terms
+# - instead we'll let them be oblivious.
+join = posixpath.join
+dirname = posixpath.dirname