[FlexJS]build_example.xml

[Harbs]

What is the purpose of these settings in the compilejs target?

        <property name="theme_arg" value="-define=CONFIG::theme,false" />
        <property name="extlib_arg" value="-define=CONFIG::extlib,false" />
        <property name="opt1_arg" value="-define=CONFIG::opt1,false" />
        <property name="opt2_arg" value="-define=CONFIG::opt2,false" />