restructuring - removed teh old ft_sourcegrandaverage code. This might very well break someone's analysis script but we have to get moving here somehow. I also added a test script that deals with (sofar only) three possible source structures. See http://bugzilla.fcdonders.nl/show_bug.cgi?id=2185


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@9328 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0