Scala 11: replace `spawn` with Future

src/AprsService.scala

@@ -246,7 +246,8 @@ class AprsService extends Service {
 	}
 
 	def sendPacket(packet : APRSPacket, status_postfix : String) {
-		scala.concurrent.ops.spawn {
+                implicit val ec = scala.concurrent.ExecutionContext.global
+		scala.concurrent.Future {
 		val status = try {
 			val status = poster.update(packet)
 			val full_status = status + status_postfix

src/backend/TcpUploader.scala

@@ -41,7 +41,8 @@ class TcpUploader(service : AprsService, prefs : PrefsWrapper) extends AprsBacke
 		conn.synchronized {
 			conn.running = false
 		}
-		scala.concurrent.ops.spawn { conn.shutdown() }
+                implicit val ec = scala.concurrent.ExecutionContext.global
+		scala.concurrent.Future { conn.shutdown() }
 		conn.interrupt()
 		conn.join(50)
 	}