[Pidgin] #4381: Add HMAC digest to libpurple

[Pidgin]

#4381: Add HMAC digest to libpurple
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  Reporter:  QuLogic    |       Owner:  grim        
      Type:  patch      |      Status:  new         
  Priority:  minor      |   Milestone:              
 Component:  libpurple  |     Version:  2.3.1       
Resolution:             |    Keywords:  HMAC, digest
   Pending:  0          |  
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Comment (by grim):

 This has my blessing, good work!

 What should I use for the author on the commit?

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Ticket URL: <http://developer.pidgin.im/ticket/4381#comment:4>
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