[platform] fixes for Linux restarter

- correct launcher script name
- correct parent process termination condition on systemd-based systems

bin/linux/restart.py

@@ -9,7 +9,8 @@ import time
 if len(sys.argv) < 2:
     raise Exception('At least one argument expected')
 
-while os.getppid() != 1:
+pid = os.getppid()
+while os.getppid() == pid:
     time.sleep(0.5)
 
 if len(sys.argv) > 2:

platform/platform-impl/src/com/intellij/util/Restarter.java

@@ -34,12 +34,14 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 
 public class Restarter {
   private Restarter() { }
 
   private static File getLauncherScript() {
-    return new File(PathManager.getBinPath(), ApplicationNamesInfo.getInstance().getLowercaseProductName() + ".sh");
+    String name = ApplicationNamesInfo.getInstance().getProductName().toLowerCase(Locale.US);
+    return new File(PathManager.getBinPath(), name + ".sh");
   }
 
   public static boolean isSupported() {