smsd polling interval on AT driver

[Todd Pinkerton]

Ok, making progress with smsd... thanks for the fix, Bozo.  smsd is now
reading sms from my AT phone (ericsson) and populating mysql. 

however -- it only seems to do this when i start smsd.  New messages
recieved after starting smsd never make it into the database.  If i
recieve a message while smsd is running, the stop and restart smsd, it
will appear in the database. 

Perhaps this is a bug? Or maybe the polling interval should be a command
line option? 

Thanks again for supporting the AT driver, I do appreciate it.  Hope
this helps identify some bugs. 

cheers,

-Todd