Updated consumeFile doc to fix a typo and reflect that we're no

willing to copy when renaming fails.

src/ZODB/interfaces.py

@@ -925,13 +925,9 @@ class IBlob(Interface):
     def consumeFile(filename):
         """Consume a file.
 
-        Eplace the current data of the blob with the file given under
+        Replace the current data of the blob with the file given under
         filename.
 
-        This method uses link-like semantics internally and has the requirement
-        that the file that is to be consumed lives on the same volume (or
-        mount/share) as the blob directory.
-
         The blob must not be opened for reading or writing when consuming a 
         file.
         """