Ensure deleted alternative currencies are removed when saving.
Fix saving of product quantity discount rates.
Improve styling of updated currency UI for Pre-WordPress 3.8
Added gateway name as a class to the payment type div to allow for greater styling control.
Wrapped the gateway name display in a span with class for added styling possibilities.
Remove inline styles from custom gateway image.
Don't wrap payment gateway display name in a span if it's empty.
_wpsc_filter_merchant_v2_get_gateway_list() code documentation and formatting.
Merge pull request #819 from benhuson/_bh_payment_types_checkout_2

PR for Styling enhancements for payment type display at checkout (rebased)
Fix IE8 JS issue with global variable conflict.  Props @MPolleke.  Fixes #818.
eliminate possibility of php runtime warning about using mktime() without paramters instead of time()
Merge pull request #821 from JeffPyeBrook/mktime-php-warning

PHP Runtime warning
add a filter to allow custom sales information to be added to purchase logs.  This custom information can come from
places like custom cart meta or custom sales meta, customer profiles or anywhere else
added wpsc_purchaselog_details_id()  as paramter to action at the suggest of @justinsainton
Merge pull request #823 from JeffPyeBrook/wpsc_additional_sales_item_info

Add a filter to allow custom information  on packing slips or other sales documents/displays
Check for download link from post meta before using it.
Add static modifier to add download link page to avoid warning
Merge pull request #825 from JeffPyeBrook/sputnik-warnings

Sputnik Warnings
wpsc_disregard_shipping_state_fields was missing a return value in some cases
Merge pull request #827 from JeffPyeBrook/mising-return-value-wpsc_disregard_shipping_state_fields

Missing return value in function
removed unreferenced global.
removed call to get_post_type_object() whose return value was never used.
query will retrieve post types of 'wpsc-product' by default, consistant with other similiar queries.
query post type is overridable using a new filter that is similiar to the other filters on the same query.