enhancement - also detect EEG channels in the 4D-BTi 248-MEG/32-EEG-channel system reported on in http://bugzilla.fcdonders.nl/show_bug.cgi?id=2389


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@8855 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0