SMS gateway user creation

i've had a couple modules running on some client sites (5.x)

here's what they do:

• handle incoming SMS messages via an email gateway
• create new drupal users (or log them in if they are already created) via an incoming SMS message

after some initial conversations with Will, we've decided that both of these features would do well to live in the SMS framework.

this is a brief post to simply let folks know that the work is now kicking off, and you can track the progress at the following issues:

http://drupal.org/node/326052