process object needs to be available

[Justin Meyer]

If a global build depends on process, steal will load fine during development b/c the npm plugin adds process:

		g.process = {
			argv: [],
			cwd: function(){
				var baseURL = loader.baseURL;
				return baseURL;
			},
			browser: true,
			env: {
				NODE_ENV: loader.env
			},
			version: '',
			platform: (navigator && navigator.userAgent && /Windows/.test(navigator.userAgent)) ? "win" : ""
		};

But this is not added by the global build.

Should this be detected? Or optional?