Perform setParent's Environment merging for ClassPathXmlApplicationContext etc constructors with parent argument as well

Issue: SPR-11068
(cherry picked from commit c5fcf19)

Author: jhoeller

spring-context/src/main/java/org/springframework/context/support/AbstractApplicationContext.java

@@ -217,16 +217,16 @@ public abstract class AbstractApplicationContext extends DefaultResourceLoader
 	 * Create a new AbstractApplicationContext with no parent.
 	 */
 	public AbstractApplicationContext() {
-		this(null);
+		this.resourcePatternResolver = getResourcePatternResolver();
 	}
 
 	/**
 	 * Create a new AbstractApplicationContext with the given parent context.
 	 * @param parent the parent context
 	 */
 	public AbstractApplicationContext(ApplicationContext parent) {
-		this.parent = parent;
-		this.resourcePatternResolver = getResourcePatternResolver();
+		this();
+		setParent(parent);
 	}