Comment 4 for bug 1013341

I uploaded a branch related to this bug. Some documentation has been added to the info manual with a few more details about how to use the smime capabilities. John, any comments on whether or not those fill in the missing pieces??

I also added a feature check to make sure the smime package is loaded when verifying signatures, but the warning message gets burried below other cruft. On that same note, if you get it to work, you will notice the notifications of verification success or failure are in a strange place (mostly just to make sure things were working)... Anybody have comments on where is the best place to put such a message??