Make parser accept arrays of empty tuples.
Make parser accept arrays of empty tuples.

diku-dk/futhark,HIPERFIT/futhark,HIPERFIT/futhark,mrakgr/futhark,diku-dk/futhark,mrakgr/futhark,ihc/futhark,diku-dk/futhark,diku-dk/futhark,CulpaBS/wbBach,mrakgr/futhark,HIPERFIT/futhark,ihc/futhark,ihc/futhark,diku-dk/futhark