Provide default ParameterNameDiscoverer for AACBF

Prior to this change, AbstractAutowireCapableBeanFactory did not support
a default ParameterNameDiscoverer.  This meant that attempting to use
<constructor-arg name=".."> syntax would fail (with a fairly obscure
exception) as that feature depends on a ParameterNameDiscoverer to
introspect the constructor arguments.

This lack of a default was originally intended to avoid a dependency on
ASM, but now that (a) .asm is a built-in module and (b) .beans has a
non-optional compile-time dependency on .asm, there is no reason not to
provide this default.

The net effect is that in a number of locations throughout the
framework, namely in GenericApplicationContext and
AbstractRefreshableApplicationContext, it is no longer necessary to
explicitly call AACBF#setParameterNameDiscoverer. This also means that
using a naked BeanFactory (likely for testing scenarios) is that much
easier.

Issue: SPR-8184

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@4568 50f2f4bb-b051-0410-bef5-90022cba6387

org.springframework.context/src/main/java/org/springframework/context/support/AbstractRefreshableApplicationContext.java

@@ -216,7 +216,6 @@ public abstract class AbstractRefreshableApplicationContext extends AbstractAppl
 		if (this.allowCircularReferences != null) {
 			beanFactory.setAllowCircularReferences(this.allowCircularReferences);
 		}
-		beanFactory.setParameterNameDiscoverer(new LocalVariableTableParameterNameDiscoverer());
 		beanFactory.setAutowireCandidateResolver(new QualifierAnnotationAutowireCandidateResolver());
 	}
 

org.springframework.context/src/main/java/org/springframework/context/support/GenericApplicationContext.java

@@ -101,7 +101,6 @@ public class GenericApplicationContext extends AbstractApplicationContext implem
 	 */
 	public GenericApplicationContext() {
 		this.beanFactory = new DefaultListableBeanFactory();
-		this.beanFactory.setParameterNameDiscoverer(new LocalVariableTableParameterNameDiscoverer());
 		this.beanFactory.setAutowireCandidateResolver(new QualifierAnnotationAutowireCandidateResolver());
 	}