In LLPluginProcessParent, instead of killing the plugin process, terminate it by closing the sockets. This lets it do some cleanup before exiting, instead of just getting shot.

indra/llplugin/llpluginprocessparent.cpp

@@ -79,8 +79,10 @@ LLPluginProcessParent::~LLPluginProcessParent()
 		// and remove it from our map
 		mSharedMemoryRegions.erase(iter);
 	}
-
-	mProcess.kill();
+	
+	// orphaning the process means it won't be killed when the LLProcessLauncher is destructed.
+	// This is what we want -- it should exit cleanly once it notices the sockets have been closed.
+	mProcess.orphan();
 	killSockets();
 }
 
@@ -414,7 +416,8 @@ void LLPluginProcessParent::idle(void)
 			break;
 			
 			case STATE_CLEANUP:
-				mProcess.kill();
+				// Don't do a kill here anymore -- closing the sockets is the new 'kill'.
+				mProcess.orphan();
 				killSockets();
 				setState(STATE_DONE);
 			break;