Dune promote

test/integration/bad/function-signatures/overloading/stanc.expected

@@ -1,21 +1,22 @@
   $ ../../../../../../install/default/bin/stanc define_extern1.stan
-Semantic error in 'define_extern1.stan', line 2, column 33 to line 5, column 3:
+Semantic error in 'define_extern1.stan', line 3, column 2 to line 5, column 3:
    -------------------------------------------------
      1:  functions {
      2:    @extern real foo(int x, int y);
-                                          ^
      3:    real foo(int x, int y){
+           ^
      4:      return 1.0;
+     5:    }
    -------------------------------------------------
 
 Function 'foo' has already been declared for signature (int, int) => real
   $ ../../../../../../install/default/bin/stanc define_extern2.stan
-Semantic error in 'define_extern2.stan', line 2, column 33 to line 3, column 25:
+Semantic error in 'define_extern2.stan', line 3, column 2 to column 25:
    -------------------------------------------------
      1:  functions {
      2:    @extern real foo(int x, int y);
-                                          ^
      3:    real foo(int x, int y);
+           ^
      4:  }
    -------------------------------------------------