bounding brokenness

My first patch

I submitted my first patch to the Thunderbird code early morning today. Thanks to Jeff Beckley for guiding me through submitting the patch. Hopefully it’ll get a positive review/superreview. This fixes one of the bugs I mentioned in my previous post: edited (and new) drafts don’t have their corresponding files generated automatically. There’s one other nagging bug to fix: trash messages when deleted don’t have an itemDeleted notification called.