[MERGE] change extension of generated html documentation from htm to html

[John Arbash Meinel]

John Arbash Meinel has voted approve.
Status is now: Approved
Comment:
Actually, James was waiting to freeze until tomorrow, just because he 
was too busy to freeze last night.

So I'll approve this to get it through.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C46B8AE0D.4090306%40ukr.net%3E