vcs: Add -L to curl to follow redirects
vcs: Add -L to curl to follow redirects

And -v for good measure.  This should fix downloading tarballs from
sourceforge.

vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,chergert/gnome-continuous