Namespace support

[fabpot]

When the code uses namespaces, the namespace node should be the root node for all the code within the namespace:

namespace Foo {
    echo 'Hello';
}

namespace Bar {
    echo 'Hello';
}

Current output:

0: Stmt_Namespace(
    ns: Name(
        parts: array(
            0: Foo
        )
    )
)
1: array(
    0: Stmt_Echo(
        exprs: array(
            0: Scalar_String(
                value: Hello
                isBinary: false
                type: 0
            )
        )
    )
)
2: Stmt_Namespace(
    ns: Name(
        parts: array(
            0: Bar
        )
    )
)
3: array(
    0: Stmt_Echo(
        exprs: array(
            0: Scalar_String(
                value: Hello
                isBinary: false
                type: 0
            )
        )
    )
)

[nikic]

My original reasoning was that normally people use semicolon style namespaces instead of the braced onces and thus it should be put as a seperate statement. But you are probably right that it makes more sense to regard the statements as subnodes of the namespace. I changed the behavior towards that in fb45e8a.

[fabpot]

Fantastic, thanks!