1) Improve the commit message. I see very minor mistakes.
(I don't know if commit messages are to be taken seriously. If yes,
see the points below )
> 2904 Chuck Bell 2009-12-09
> BUG#49414 : Innodb tbl w/blob and text column with NULL no
> longer NULL after backup/restore
> The backup default driver was writing blobs even if there
> was no data then calling a method to set it as not null.
 Use of the word 'then' here seems inappropriate to me. You
meant 'and then'?
> This set the fields as not null and wrinting an empty string
> to the field.
 *writing * an empty string.