added support for the neuromag_fif chunk for realtime MEG preocessing, see http://bugzilla.fcdonders.nl/show_bug.cgi?id=1792. The implementation is the same as for the CTF res4 chunk.


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@8620 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0