Consider allowing setting local variables via Loader trickery

[jburke]

We can leverage the function scope used by the loader to allow creating local variables that may make it easier to use Dojo.

A patch is attached to the ticket, but it is incomplete:

1) Needs a build system patch to allow injecting the locals for layers that need the locals.

2) Also need a build system patch for generating proper xdomain modules.

3) The module prefix registry probably needs to add a dot on the end of the name if none exists, so that registering "dojo" does not also match "dojox".

[jburke]

Basic loader patch, patches dojo/_base/loader.js

[jburke]

See this blog entry for more info: http://tagneto.blogspot.com/2009/04/custom-local-variables-using-dojo.html