[Pidgin] #4824: Use libarchive rather than shelling out to gzip and pals

[Pidgin]

#4824: Use libarchive rather than shelling out to gzip and pals
--------------------------+-------------------------------------------------
 Reporter:  resiak        |       Owner:       
     Type:  enhancement   |      Status:  new  
 Priority:  minor         |   Milestone:       
Component:  pidgin (gtk)  |     Version:  2.3.1
 Keywords:                |     Pending:  0    
--------------------------+-------------------------------------------------
 Rather than shelling out to random binaries installed on the system, we
 should just use [http://people.freebsd.org/~kientzle/libarchive/
 ibarchive] to extract `.tgz` and `.zip` files.

 It doesn't build on Windows apparently right now, though.

 (Apparently we don't support icon themes in zip files on Lunix?  We
 should.)

-- 
Ticket URL: <http://developer.pidgin.im/ticket/4824>
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