Add support for deps config property

[rorticus]

The dojo1 loader supported the deps/callback property in the config, http://dojotoolkit.org/reference-guide/1.10/loader/amd.html#loader-amd .

This property would cause the loader to require deps modules after it's loaded.

[kitsonk]

I would be reticent to introduce anything that isn't covered by the Common AMD Configuration. If this doesn't satisfy it, I would say we should consider how RequireJS accomplishes it before actually looking at behaviour of the Dojo 1 loader.

What use case is driving this need?

[matt-gadd]

@kitsonk requirejs supports both deps and a callback, these are both useful for pre-setup dependencies

[kitsonk]

if requirejs supports them, I would say they are part of the psuedo standard then and I guess it gives it an ability to turn the require API signature into a single options bag... I wonder why it wasn't part of the common config as it seems to make to make sense.