Changed a few tests, and changed the folder of a few of them.

src/test/compile-fail/issue-39616.rs

@@ -9,7 +9,7 @@
 // except according to those terms.
 
 fn foo(a: [0; 1]) {} //~ ERROR expected type, found `0`
-//~| ERROR expected one of `->`, `where`, or `{`, found `]`
+//~| ERROR expected one of `)`, `->`, `where`, or `{`, found `]`
 // FIXME(jseyfried): avoid emitting the second error (preexisting)
 
 fn main() {}

src/test/ui/tuple-struct-fields/test.rs

@@ -12,6 +12,6 @@ mod foo {
     type T = ();
     struct S1(pub(in foo) (), pub(T), pub(crate) (), pub(((), T)));
     struct S2(pub((foo)) ());
-    //~^ ERROR expected `,`, found `(`
+    //~^ ERROR expected one of `)` or `,`, found `(`
     //~| ERROR cannot find type `foo` in this scope
 }

src/test/ui/tuple-struct-fields/test2.rs

@@ -13,7 +13,7 @@ macro_rules! define_struct {
         struct S1(pub $t);
         struct S2(pub (in foo) ());
         struct S3(pub $t ());
-        //~^ ERROR expected `,`, found `(`
+        //~^ ERROR expected one of `)` or `,`, found `(`
     }
 }
 

src/test/ui/tuple-struct-fields/test3.rs

@@ -13,7 +13,7 @@ macro_rules! define_struct {
         struct S1(pub($t));
         struct S2(pub (in foo) ());
         struct S3(pub($t) ());
-        //~^ ERROR expected `,`, found `(`
+        //~^ ERROR expected one of `)` or `,`, found `(`
     }
 }