[MERGE] Display the author instead of the committer in bzr log and bzr annotate

[Ian Clatworthy]

Ian Clatworthy has voted approve.
Status is now: Approved
Comment:
Sweet. Code and tests all look nicely done. I'll merge now.

BTW, I'd love to see a "part 3" that enhanced the help of the various 
commands to explain when committer vs author is used.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C1187290792.20220.10.camel%40nemo%3E