PY-8414 (don't restart file watcher on hangup signal)

platform/platform-impl/src/com/intellij/openapi/vfs/impl/local/FileWatcher.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2012 JetBrains s.r.o.
+ * Copyright 2000-2013 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -183,7 +183,13 @@ public class FileWatcher {
   }
 
   private void startupProcess(final boolean restart) throws IOException {
-    if (myIsShuttingDown) return;
+    if (myIsShuttingDown) {
+      return;
+    }
+    if (ShutDownTracker.isShutdownHookRunning()) {
+      myIsShuttingDown = true;
+      return;
+    }
 
     if (myStartAttemptCount++ > MAX_PROCESS_LAUNCH_ATTEMPT_COUNT) {
       notifyOnFailure(ApplicationBundle.message("watcher.failed.to.start"), null);