Merged revisions 79911,79916-79917,80018,80418,80572-80573,80635-80639,80668,80922 via svnmerge from
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r79911 | benjamin.peterson | 2010-04-09 15:38:53 -0500 (Fri, 09 Apr 2010) | 1 line

  use absolute import
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  r79916 | benjamin.peterson | 2010-04-09 16:05:21 -0500 (Fri, 09 Apr 2010) | 1 line

  generalize detection of __future__ imports and attach them to the tree
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  r79917 | benjamin.peterson | 2010-04-09 16:11:44 -0500 (Fri, 09 Apr 2010) | 1 line

  don't try to 'fix' relative imports when absolute_import is enabled #8858
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  r80018 | benjamin.peterson | 2010-04-12 16:12:12 -0500 (Mon, 12 Apr 2010) | 4 lines

  prevent diffs from being mangled is multiprocess mode #6409

  Patch by George Boutsioukis.
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  r80418 | benjamin.peterson | 2010-04-23 16:00:03 -0500 (Fri, 23 Apr 2010) | 1 line

  remove unhelpful description
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  r80572 | benjamin.peterson | 2010-04-27 20:33:54 -0500 (Tue, 27 Apr 2010) | 1 line

  use unicode literals
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  r80573 | jeffrey.yasskin | 2010-04-27 23:08:27 -0500 (Tue, 27 Apr 2010) | 6 lines

  Don't transform imports that are already relative.  2to3 turned
    from . import refactor
  into
    from .. import refactor
  which broke the transformation of 2to3 itself.
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  r80635 | benjamin.peterson | 2010-04-29 16:02:23 -0500 (Thu, 29 Apr 2010) | 1 line

  remove imports
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  r80636 | benjamin.peterson | 2010-04-29 16:02:41 -0500 (Thu, 29 Apr 2010) | 1 line

  unicode literal
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  r80637 | benjamin.peterson | 2010-04-29 16:03:42 -0500 (Thu, 29 Apr 2010) | 1 line

  must pass a string to Number
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  r80638 | benjamin.peterson | 2010-04-29 16:05:34 -0500 (Thu, 29 Apr 2010) | 1 line

  unicode literals
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  r80639 | benjamin.peterson | 2010-04-29 16:06:09 -0500 (Thu, 29 Apr 2010) | 1 line

  pass string to Number
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  r80668 | jeffrey.yasskin | 2010-04-30 18:02:47 -0500 (Fri, 30 Apr 2010) | 4 lines

  Make 2to3 run under Python 2.5 so that the benchmark suite at
  http://hg.python.org/benchmarks/ can use it and still run on implementations
  that haven't gotten to 2.6 yet.  Fixes issue 8566.
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  r80922 | benjamin.peterson | 2010-05-07 11:06:25 -0500 (Fri, 07 May 2010) | 1 line

  prevent xrange transformation from wrapping range calls it produces in list
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diff --git a/Lib/lib2to3/pytree.py b/Lib/lib2to3/pytree.py
index 27cdd72..6245c8c 100644
--- a/Lib/lib2to3/pytree.py
+++ b/Lib/lib2to3/pytree.py
@@ -289,8 +289,7 @@
             for node in child.post_order():
                 yield node
 
-    @property
-    def prefix(self):
+    def _prefix_getter(self):
         """
         The whitespace and comments preceding this node in the input.
         """
@@ -298,11 +297,12 @@
             return ""
         return self.children[0].prefix
 
-    @prefix.setter
-    def prefix(self, prefix):
+    def _prefix_setter(self, prefix):
         if self.children:
             self.children[0].prefix = prefix
 
+    prefix = property(_prefix_getter, _prefix_setter)
+
     def set_child(self, i, child):
         """
         Equivalent to 'node.children[i] = child'. This method also sets the
@@ -390,18 +390,17 @@
         """Return a pre-order iterator for the tree."""
         yield self
 
-    @property
-    def prefix(self):
+    def _prefix_getter(self):
         """
         The whitespace and comments preceding this token in the input.
         """
         return self._prefix
 
-    @prefix.setter
-    def prefix(self, prefix):
+    def _prefix_setter(self, prefix):
         self.changed()
         self._prefix = prefix
 
+    prefix = property(_prefix_getter, _prefix_setter)
 
 def convert(gr, raw_node):
     """