typos in legal bits

[Roy Fielding <fi...@beach.w3.org>]

Just noticed the following in http_core.c, and its in every file.

 * clear that Apache is free. Permission is also granted for vendors to 
 * sell support for for Apache. We explicitly forbid the redistribution of 
                ^^^^^^^

and another, but just in http_core.c:

 * commands, but most of the old srm.conf is in the the modules.
                                                ^^^^^^^

......Roy