[Value] adds test oracles for -config equalities

tests/value/oracle_equalities/alias.3.res.oracle

+67c67
+<   z ∈ {0; 1; 2}
+---
+>   z ∈ {0; 2}

tests/value/oracle_equalities/alias.4.res.oracle

+81c81
+<   y ∈ {0; 3; 77}
+---
+>   y ∈ {77}

tests/value/oracle_equalities/alias.5.res.oracle

+59a60
+> [eva] tests/value/alias.i:260: starting to merge loop iterations
+170c171
+<   y ∈ {0; 3; 77}
+---
+>   y ∈ {77}

tests/value/oracle_equalities/alias.6.res.oracle

+86c86
+<   x ∈ {0; 4; 33}
+---
+>   x ∈ {33}