Add L0C.Substitute module for name replacement.
Add L0C.Substitute module for name replacement.

Not used anywhere right now, but it may come in handy one day.

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