Move some tests to more reasonable directories

Author: c410-f3r

src/test/ui/argument-passing.rs

@@ -1,5 +1,5 @@
 error[E0658]: function pointers cannot appear in constant functions
-  --> $DIR/issue-37550.rs:3:9
+  --> $DIR/issue-37550-1.rs:3:9
    |
 LL |     let x = || t;
    |         ^

src/test/ui/mut-vstore-expr.rs src/test/ui/array-slice-vec/mut-vstore-expr.rs

@@ -7,8 +7,8 @@ use std::path::Path;
 
 const ENTRY_LIMIT: usize = 1000;
 // FIXME: The following limits should be reduced eventually.
-const ROOT_ENTRY_LIMIT: usize = 1331;
-const ISSUES_ENTRY_LIMIT: usize = 2488;
+const ROOT_ENTRY_LIMIT: usize = 1275;
+const ISSUES_ENTRY_LIMIT: usize = 2310;
 
 fn check_entries(path: &Path, bad: &mut bool) {
     let dirs = walkdir::WalkDir::new(&path.join("test/ui"))