Add run-make test for libnative file I/O and O_NONBLOCK

This tests #13336.

Author: lilyball

src/test/run-make/libnative-nonblock/Makefile

@@ -0,0 +1,8 @@
+-include ../tools.mk
+
+all:
+	$(RUSTC) write.rs
+	$(CC) -o $(TMPDIR)/mknblock mknblock.c
+	mkfifo $(TMPDIR)/fifo
+	/bin/sh -c "(sleep 1; cat) < $(TMPDIR)/fifo > /dev/null" &
+	/bin/sh -c "($(TMPDIR)/mknblock; $(TMPDIR)/write) > $(TMPDIR)/fifo"

src/test/run-make/libnative-nonblock/mknblock.c

@@ -0,0 +1,10 @@
+#include <fcntl.h>
+#include <stdio.h>
+
+int main() {
+    if (fcntl(1, F_SETFL, O_NONBLOCK) == -1) {
+        perror("fcntl");
+        return 1;
+    }
+    return 0;
+}

src/test/run-make/libnative-nonblock/write.rs

@@ -0,0 +1,23 @@
+use std::io;
+use std::io::IoResult;
+use std::os;
+
+fn run() -> IoResult<()> {
+    let mut out = io::stdio::stdout_raw();
+    for _ in range(0u, 32) {
+        let mut buf = ['x' as u8, ..1024];
+        buf[1023] = '\n' as u8;
+        try!(out.write(buf));
+    }
+    Ok(())
+}
+
+fn main() {
+    match run() {
+        Err(e) => {
+            (writeln!(&mut io::stderr(), "Error: {}", e)).unwrap();
+            os::set_exit_status(1);
+        }
+        Ok(()) => ()
+    }
+}