Allow equivalent to microcontainer's "value-factory" element as the value for a -service.xml's server/mbean/attribute element.

Can handle this:

<mbean ...>
<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" parameter="A" default="1100"/>
</attribute>
</mbean>

And this:

<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" default="1100">
<parameter>A</parameter>
<parameter>1</parameter>
</value-factory>
</attribute>

And, as long as parameter type com.foo.Bar is visible and a PropertyEditor exists, this:

<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" default="1100">
<parameter class="com.foo.Bar">A</parameter>
<parameter class="java.lang.Integer">1</parameter>
</value-factory>
</attribute>

Injecting a type assignable from the parameter type is supported:

<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" default="1100">
<parameter class="java.lang.Object">
<value class="java.lang.Integer">1</value>
</parameter>
</value-factory>
</attribute>

The following MC value-factory features are not supported:

<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" default="1100">
<parameter><inject bean"FooParamProvider"/></parameter>
</value-factory>
</attribute>

<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" default="1100">
<parameter>
<bean name="FooParam" class="com.foo.FooParam"/>
</parameter>
</value-factory>
</attribute>

<attribute name="Foo">
<value-factory bean="FooProvider" method="getFoo" default="1100">
<parameter>
<map>
...
</map>
</parameter>
</value-factory>
</attribute>

(or any of the other collection types).