Rename DART_PRECOMPILED -> DART_PRECOMPILED_RUNTIME

tests/standalone/precompilation_test.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Test generating and running a simple precompiled snapshot of this script.
 
 import 'dart:io';
 
 main(List args) {
   if (args.length > 0 && args[0] == "--hello") {
@@ skipping 68 matching lines @@
     if (result.exitCode != 0) {
       print(result.stdout);
       print(result.stderr);
       throw "Shared library creation failed!";
     }
 
     var ld_library_path = new String.fromEnvironment("LD_LIBRARY_PATH");
     ld_library_path = "${ld_library_path}:${tmp.path}";
 
     result = Process.runSync(
-       "${dart_executable}_precompiled",
+       "${dart_executable}_precompiled_runtime",
        ["--run-precompiled-snapshot", "ignored_script", "--hello"],
        workingDirectory: tmp.path,
        environment: {"LD_LIBRARY_PATH": ld_library_path});
     if (result.exitCode != 0) {
       print(result.stdout);
       print(result.stderr);
       throw "Precompiled binary failed.";
     }
     print(result.stdout);
     if (result.stdout != "Hello\n") {
       throw "Precompiled binary output mismatch.";
     }
   } finally {
     tmp?.deleteSync(recursive: true);
   }
 }