port basic utility functions + tests to core

[alex]

as per the roadmap document and refactor.txt, port misc utility functions and tests for them into Core.

[alex]

(In [7665]) initial start at pulling in some of the utility funcs. Refs #2608. Refs #2609

[alex]

(In [7666]) refs #2608. refs #2609

[jburke]

(In [7963]) Refs #2608: Change _baseUrl to baseUrl to allow developers to make url paths relative to it, also make Uri() constructor private, since we might want to change it to make it simpler. Waiting to see if there are use cases that require its current complexity.

[jburke]

(In [7987]) Refs #2608. Changing dojo.global() and doc() to properties for smaller code size and performance. No credible use case to have them as functions.

[jburke]

(In [7989]) Refs #2608. Changing dojo.global() and doc() to properties for smaller code size and performance. No credible use case to have them as functions.

[jburke]

(In [7995]) Refs #2608. Get the unit tests in rhino to work, except for json tests. Rhino does not serialize object properties in the same order as they appeared in the source string. Probably something to do with for/in loops not guaranteed to happen in any particular order. We just get lucky in the browser. Need to possibly rethink the tests for it.

[jburke]

(In [7996]) Refs #2608. Fixes json tests so that they pass in Rhino.

[alex]

marking fixed. issues for this should be filed under separate cover.