RequireJS and Module

I work on a new generator for yeoman: footguard (https://github.com/mazerte/yeoman-footguard)
I have a problem with "whole project optimizing" (http://requirejs.org/docs/optimization.html#wholeproject) in RequireJS. When I specify the "dir" directive in require.config the build task doesn't work.

````javascript
grunt.initConfig({

        rjs: {
			// no minification, is done by the min task
			baseUrl: 'js/',
			appDir: '../app/',
			dir: './',
			
			wrap: true,

			removeCombined: true,
			keepBuildDir: true,

			inlineText: false,
			mainConfigFile: 'js/main.js',

			optimize: "none",

			modules: [
				{
					name: 'app/vendors',
					exclude: []
				},
				{
					name: 'app/app',
					exclude: ['app/vendors']
				},
				{
					name: 'main',
					exclude: [
						'config', 
						'app/app', 
						'app/vendors', 
						'../components/chai/chai',
						'../components/expect/expect',
						'../components/mocha/mocha'
					]
				}
			]
		}
});
```

With this config I have two problems:
* the first one is in "rjs" task when "min_max_info" helper is called, the "baseUrl" change after optimizing and the original value is stored in "originalBaseUrl"
* the second one is in "usemin" task when the script look for "data-main" attribute. This task override rjs.out config, it doesn't work with "rjs.dir" config

You can test my configuration with footguard:
```bash
$ mkdir project
$ cd project
$ npm init
$ npm install https://github.com/mazerte/yeoman-footguard.git
$ yeoman init footguard
$ yeoman build
```