Added test containing the same variable in two different FOR - ON clauses.
Added test containing the same variable in two different FOR - ON clauses.

vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,vtomole/SICL,vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL