Mark test as slow and avoid fail if fallocate isn't available

Author: cmb69

ext/standard/tests/file/bug81145.phpt

@@ -2,7 +2,12 @@
 Bug #81145 (copy() and stream_copy_to_stream() fail for +4GB files)
 --SKIPIF--
 <?php
+if (getenv("SKIP_SLOW_TESTS")) die("skip slow test");
 if (disk_free_space(__DIR__) < 0x220000000) die("skip insuffient disk space");
+if (PHP_OS_FAMILY !== "Windows") {
+    exec("fallocate -h", $output, $status);
+    if ($status !== 0) die("skip fallocate(1) not available");
+}
 ?>
 --FILE--
 <?php