add extra args for AUG gdat call, 4th string is added as is to sf2sig call:...

add extra args for AUG gdat call, 4th string is added as is to sf2sig call: gdat(shot,{'IDG','Itor','AUGD',['''-ed'',''2'',''-raw''']},'doplot',1);

git-svn-id: https://spcsvn.epfl.ch/repos/TCV/gdat/trunk@9079 d63d8f72-b253-0410-a779-e742ad2e26cf