Auto merge of #109875 - jyn514:no-fulldeps, r=compiler-errors

Move most ui-fulldeps tests to ui/

Same rationale as #109770, they don't actually need a stage 2 build.

This increases the limit for the UI directory because otherwise it was annoying to be constantly moving files into subdirectories when I fixed a test; #109873 makes up for it.

cc #109770, #109874

Author: bors

src/tools/tidy/src/ui_tests.rs

@@ -9,7 +9,7 @@ use std::path::{Path, PathBuf};
 
 // FIXME: The following limits should be reduced eventually.
 const ENTRY_LIMIT: usize = 885;
-const ROOT_ENTRY_LIMIT: usize = 880;
+const ROOT_ENTRY_LIMIT: usize = 891;
 const ISSUES_ENTRY_LIMIT: usize = 1978;
 
 fn check_entries(tests_path: &Path, bad: &mut bool) {

tests/ui-fulldeps/extern-mod-syntax.rs

@@ -0,0 +1,11 @@
+// run-pass
+
+#![allow(unused_imports)]
+#![no_std]
+
+extern crate std;
+use std::ffi::c_void;
+
+pub fn main() {
+    std::println!("Hello world!");
+}