added target to jar build to copy splashscreen.gif to src tree so it gets into jaer.jar
added target to jar build to copy splashscreen.gif to src tree so it gets into jaer.jar

git-svn-id: e3d3b427d532171a6bd7557d8a4952a393b554a2@3026 b7f4320f-462c-0410-a916-d9f35bb82d52

SensorsINI/jaer,SensorsINI/jaer,SensorsINI/jaer,SensorsINI/jaer,SensorsINI/jaer,viktorbahr/jaer,viktorbahr/jaer,SensorsINI/jaer,SensorsINI/jaer,viktorbahr/jaer,viktorbahr/jaer,viktorbahr/jaer,viktorbahr/jaer,viktorbahr/jaer,SensorsINI/jaer