Handle deprecation of customer_details meta value gracefully
    Create general purpose meta value deprecation approach
    Meta utility function testing and cleanup
    Using visitor meta in place of customer meta for clarity.
    Adding upgrade of 'checkout_details' customer meta item to checkout item to upgrade process
removed line to fire upgrade routine being tested
Most of the way through being able to checkout without the checkout_details object, using customer meta.
No php errors on error checkout, no disappearing fields, just a little more refactoring and bug fixing to do.

Good place the checkpoint the commit
Initial commit creating file to hold country region currency utility logic.

Throughout the WPEC codebase, but mostly in checkout and profile related functions, there are many direct references to the database in support of getting information about countries, regions and currencies.

The readability and maintainability of the codebase would be improved if there was an abstraction between our business logic and the raw data in the database. Having such an API would also allow us to identify any performance issues that could be addressed by database tweaks or caching.
Create intital file and include it
Merge remote-tracking branch 'origin/country-region-currency-util' into pr-deprecate-meta-chckout-details
Working the state/region issue, and form validation
Merge branch 'checkout-form-test-fixes' into pr-deprecate-meta-chckout-details
Formatting changes
Merge branch 'cart-class-to-its-own-file' into pr-deprecate-meta-chckout-details

Conflicts:
	wpsc-core/wpsc-deprecated.php
Merge branch 'missing-quotes-in-page-php' into pr-deprecate-meta-chckout-details
Merge branch 'cart-class-to-its-own-file' into pr-deprecate-meta-chckout-details
Merge remote-tracking branch 'upstream/master' into pr-deprecate-meta-chckout-details
Merge remote-tracking branch 'upstream/master' into pr-deprecate-meta-chckout-details

Conflicts:
	wpsc-core/wpsc-deprecated.php
	wpsc-includes/cart.class.php
manual merged from prior branch
Merge pull request #986 from JeffPyeBrook/pr-deprecate-meta-chckout-details

    Gracefully Deprecate "checkout_details" customer meta