basefilectx: move __ne__ from filectx

mercurial/context.py

@@ -474,6 +474,9 b' class basefilectx(object):'
         except AttributeError:
             return False
 
+    def __ne__(self, other):
+        return not (self == other)
+
 class filectx(basefilectx):
     """A filecontext object makes access to data related to a particular
        filerevision convenient."""
@@ -523,9 +526,6 b' class filectx(basefilectx):'
             # considered when solving linkrev issue are on the table.
             return changectx(self._repo.unfiltered(), self._changeid)
 
-    def __ne__(self, other):
-        return not (self == other)
-
     def filectx(self, fileid):
         '''opens an arbitrary revision of the file without
         opening a new filelog'''