Rollup merge of rust-lang#125607 - GuillaumeGomez:migrate-compile-stdin, r=jieyouxu

Migrate `run-make/compile-stdin` to `rmake.rs`

Part of rust-lang#121876.

r? `@jieyouxu`

Author: GuillaumeGomez

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -18,7 +18,6 @@ run-make/cdylib-fewer-symbols/Makefile
 run-make/cdylib/Makefile
 run-make/codegen-options-parsing/Makefile
 run-make/comment-section/Makefile
-run-make/compile-stdin/Makefile
 run-make/compiler-lookup-paths-2/Makefile
 run-make/compiler-lookup-paths/Makefile
 run-make/compiler-rt-works-on-mingw/Makefile

tests/run-make/compile-stdin/Makefile

@@ -0,0 +1,13 @@
+// When provided standard input piped directly into rustc, this test checks that the compilation
+// completes successfully and that the output can be executed.
+//
+// See <https://github.com/rust-lang/rust/pull/28805>.
+
+//@ ignore-cross-compile
+
+use run_make_support::{run, rustc};
+
+fn main() {
+    rustc().arg("-").stdin("fn main() {}").run();
+    run("rust_out");
+}