rcMap related two fixes

1) moved rcMap up front before the user inputs, so that GLM reads it from the prior tCCA_GLM function.
2) Because of the (rather annoying or stlll mysterious) iBlk index, the ischar vs iscell check was not working, since it was now all cell arrays. So added rcMap{iBlk} which fixed it.
3) And after this fix, this was the first full run of homer with our function, so an important moment!, wanted to share with you but you are busy with combe:)