[m-rev.] for post-commit review: fix mantis bug 361

[Zoltan Somogyi]

The code change is minimal. The review is for the comment
and the updated documentation.

Zoltan.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Log.bug361
Type: application/octet-stream
Size: 318 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20140916/d90777c5/attachment.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: DIFF.bug361
Type: application/octet-stream
Size: 6839 bytes
Desc: not available
URL: <http://lists.mercurylang.org/archives/reviews/attachments/20140916/d90777c5/attachment-0001.obj>