fix clone url for davidbrember's repo, and add it to the git repo list

doc/git.mdwn

@@ -39,6 +39,7 @@ into [[Joey]]'s working tree. This is recommended. :-)
 * [[jelmer]] `git://git.samba.org/jelmer/ikiwiki.git`
 * [[hendry]] `git://webconverger.org/git/ikiwiki`
 * [[jon]] `git://github.com/jmtd/ikiwiki.git`
+* [[davidbremner]] `http://pivot.cs.unb.ca/git/ikipostal.git`
 
 ## branches
 

doc/todo/comment_by_mail.mdwn

@@ -22,7 +22,7 @@ mailbox. I would be interested in any ideas people have about security.
     > posts as they come in. --[[Joey]]
   * work in progress can be 
 
-   - [cloned](http://pivot.cs.unb.ca/git/ikiperl.git), or 
+   - [cloned](http://pivot.cs.unb.ca/git/ikipostal.git), or 
    - [browsed](http://pivot.cs.unb.ca/git/?p=ikipostal.git;a=summary)