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{updated} @BeancAnnotation

<p>
	The {@link oaj.annotation.Beanc @Beanc} annotation is used to 
	map constructor arguments to property names on bean with read-only properties.
	Since method parameter names are lost during compilation, this annotation essentially redefines 
	them so that they are available at runtime.
</p>
<p>
	The definition of a read-only bean is a bean with properties with only getters, like shown below:
</p>	
<p class='bpcode w800'>
	<jc>// Our read-only bean.</jc>
	<jk>public class</jk> Person {
		<jk>private final</jk> String <jf>name</jf>;
		<jk>private final int</jk> <jf>age</jf>;

		<ja>@Beanc</ja>(properties=<js>"name,age"</js>})
		<jk>public</jk> Person(String name, <jk>int</jk> age) {
			<jk>this</jk>.<jf>name</jf> = name;
			<jk>this</jk>.<jf>age</jf> = age;
		}

		<jc>// Read only properties.</jc>
		<jc>// Getters, but no setters.</jc>

		<jk>public</jk> String getName() {
			<jk>return</jk> <jf>name</jf>;
		}

		<jk>public int</jk> getAge() {
			<jk>return</jk> <jf>age</jf>;
		}
	}			
</p>
<p class='bpcode w800'>
	<jc>// Parsing into a read-only bean.</jc>
	String json = <js>"{name:'John Smith',age:45}"</js>;
	Person p = JsonParser.<jsf>DEFAULT</jsf>.parse(json);
	String name = p.getName();  <jc>// "John Smith"</jc>
	<jk>int</jk> age = p.getAge();   <jc>// 45</jc>
</p>
<p>
	Beans can also be defined with a combination of read-only and read-write properties.
</p>
<p>
	The {@link oaj.annotation.Name @Name} annotation can also be used instead of <c><ja>@Beanc</ja>(properties)</c>:
</p>
<p class='bpcode w800'>
	<ja>@Beanc</ja>
	<jk>public</jk> Person(<ja>@Name</ja>(<js>"name"</js>) String name, <ja>@Name</ja>(<js>"age"</js>) <jk>int</jk> age) {
		<jk>this</jk>.<jf>name</jf> = name;
		<jk>this</jk>.<jf>age</jf> = age;
	}
</p>
<p>
	If neither <c><ja>@Beanc</ja>(properties)</c> or <ja>@Name</ja> is used to identify the bean property names, 
	we will try to use the parameter names if they are available in the bytecode.
</p>