[Etoys] #2976 NORM Untriag: etoys should set _NET_WM_PID hint

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#2976: etoys should set _NET_WM_PID hint
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 Reporter:  danw            |       Owner:  etoys    
     Type:  enhancement     |      Status:  new      
 Priority:  normal          |   Milestone:  Untriaged
Component:  etoys-activity  |     Version:           
 Keywords:                  |    Verified:  0        
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 The code to make activities take up space in the home activity ring
 proportional to their memory usage depends on having activities set the
 _NET_WM_PID hint on their windows. Gtk-based activities get this
 automatically, but Etoys doesn't, meaning it always shows up as taking the
 minimum possible space for an activity (despite the fact that actually
 it's using quite a lot of memory). This patch to squeak fixes that.

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Ticket URL: <http://dev.laptop.org/ticket/2976>
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