[Pidgin] #6191: Support new Yahoo SMS chat

[Pidgin]

#6191: Support new Yahoo SMS chat
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Reporter:  qwertymodo  |       Owner:  marv          
    Type:  defect      |      Status:  new           
Priority:  minor       |   Component:  Yahoo!        
 Version:  2.4.2       |    Keywords:  yahoo, texting
 Pending:  0           |  
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 Yahoo mail has recently added a feature to their online chat application
 that allows a user to send and receive chats with a mobile phone via SMS
 (text-messaging), which, to the computer user looks just like a normal
 Yahoo chat, and to the mobile-phone user looks just like a friend texting
 them.  It would be awesome to implement the ability to add a mobile-phone
 number to a buddy's contact info, and then a little phone icon to open up
 a chat with the person's phone via this service.  Here's kind of an
 overview of the service (End-User type overview... sorry, it's next to
 worthless on the development side but it's all i could find at the moment)
 http://help.yahoo.com/us/tutorials/cg/mail/cg_text1.html

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Ticket URL: <http://developer.pidgin.im/ticket/6191>
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