GH-386: Restore interrupted thread status

Fixes https://github.com/spring-projects/spring-retry/issues/386

* Update author and copyright

**Cherry-pick to `1.3.x`**

src/main/java/org/springframework/retry/backoff/ExponentialBackOffPolicy.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2020 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,6 +38,7 @@ import org.springframework.util.ClassUtils;
  * @author Dave Syer
  * @author Gary Russell
  * @author Artem Bilan
+ * @author Marius Lichtblau
  */
 @SuppressWarnings("serial")
 public class ExponentialBackOffPolicy implements SleepingBackOffPolicy<ExponentialBackOffPolicy> {
@@ -179,6 +180,7 @@ public class ExponentialBackOffPolicy implements SleepingBackOffPolicy<Exponenti
 			this.sleeper.sleep(sleepTime);
 		}
 		catch (InterruptedException e) {
+			Thread.currentThread().interrupt();
 			throw new BackOffInterruptedException("Thread interrupted while sleeping", e);
 		}
 	}

src/main/java/org/springframework/retry/backoff/FixedBackOffPolicy.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2014 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,7 @@ package org.springframework.retry.backoff;
  * @author Rob Harrop
  * @author Dave Syer
  * @author Artem Bilan
+ * @author Marius Lichtblau
  */
 public class FixedBackOffPolicy extends StatelessBackOffPolicy implements SleepingBackOffPolicy<FixedBackOffPolicy> {
 
@@ -82,6 +83,7 @@ public class FixedBackOffPolicy extends StatelessBackOffPolicy implements Sleepi
 			sleeper.sleep(backOffPeriod);
 		}
 		catch (InterruptedException e) {
+			Thread.currentThread().interrupt();
 			throw new BackOffInterruptedException("Thread interrupted while sleeping", e);
 		}
 	}

src/main/java/org/springframework/retry/backoff/UniformRandomBackOffPolicy.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2021 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,6 +29,7 @@ import java.util.Random;
  * @author Rob Harrop
  * @author Dave Syer
  * @author Tomaz Fernandes
+ * @author Marius Lichtblau
  */
 public class UniformRandomBackOffPolicy extends StatelessBackOffPolicy
 		implements SleepingBackOffPolicy<UniformRandomBackOffPolicy> {
@@ -112,6 +113,7 @@ public class UniformRandomBackOffPolicy extends StatelessBackOffPolicy
 			sleeper.sleep(minBackOffPeriod + delta);
 		}
 		catch (InterruptedException e) {
+			Thread.currentThread().interrupt();
 			throw new BackOffInterruptedException("Thread interrupted while sleeping", e);
 		}
 	}

src/test/java/org/springframework/retry/backoff/ExponentialBackOffPolicyTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import org.junit.Test;
 /**
  * @author Rob Harrop
  * @author Dave Syer
+ * @author Marius Lichtblau
  */
 public class ExponentialBackOffPolicyTests {
 

src/test/java/org/springframework/retry/backoff/FixedBackOffPolicyTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@ import org.junit.Test;
 /**
  * @author Rob Harrop
  * @author Dave Syer
+ * @author Marius Lichtblau
  * @since 2.1
  */
 public class FixedBackOffPolicyTests {

src/test/java/org/springframework/retry/backoff/UniformRandomBackOffPolicyTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2022 the original author or authors.
+ * Copyright 2006-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@ import org.junit.Test;
 
 /**
  * @author Tomaz Fernandes
+ * @author Marius Lichtblau
  * @since 1.3.2
  */
 public class UniformRandomBackOffPolicyTests {