Replace spaces with tabs in .gitmodules
Replace spaces with tabs in .gitmodules

It's what git uses when adding something to the file, and mixing both in
the same file is ugly.

OmeGak/indico,ThiefMaster/indico,pferreir/indico,indico/indico,indico/indico,mic4ael/indico,OmeGak/indico,DirkHoffmann/indico,DirkHoffmann/indico,mvidalgarcia/indico,indico/indico,DirkHoffmann/indico,pferreir/indico,ThiefMaster/indico,mic4ael/indico,indico/indico,pferreir/indico,mvidalgarcia/indico,mic4ael/indico,mic4ael/indico,OmeGak/indico,ThiefMaster/indico,ThiefMaster/indico,mvidalgarcia/indico,OmeGak/indico,pferreir/indico,DirkHoffmann/indico,mvidalgarcia/indico