[regression] lang collection in metas is missing for controller

[caridy]

Reported by @ft thru the forum: http://developer.yahoo.com/forum/Yahoo-Mojito/Internationalization-on-client-side/1376040501301-15e8a4da-ac8c-4391-985f-093001c8b477/1376293135175

It seems like the list of supported langs for each controlled is not added correctly to the meta, so, for mojits running on the client side it will never load the corresponding lang bundle. Here is an example of the meta from the repro case (https://github.com/ftliou/mojito-test):

YUI.add("loader-app", function(Y) {
    Y.applyConfig({
        groups: {
            app: Y.merge(((Y.config.groups && Y.config.groups.app) || {}), {
                modules: {
                    "Master": {
                        "path": "Master.js",
                        "requires": ["mojito", "dump", "mojito-composite-addon", "mojito-intl-addon", "mojito-assets-addon", "intl"]
                    },
                    "lang/Master_es": {
                        "path": "Master_es.js",
                        "requires": ["intl"]
                    }
                }
            })
        }
    });
}, "", {
    requires: ["loader-base"]
});

In this case, Master should have the collection of langs right after requires.

[caridy]

+mojito@0.7.5