Coupon Logic was returning true for all items

Dumb bug ignored all logic conditions and just returned true.
Merge pull request #469 from 1bigidea/hotfix/coupons

Coupon Logic was returning true for all items
Drop mobile.png

No longer used with drop of pig
Merge pull request #473 from 1bigidea/drop-mobile

Drop mobile.png (last bit of cleanup) props Andrew
UI fix so that 'Buy Now Button only...' text isn't overlapped by the metabox.
Avoid PHP warnings by correctly providing defaults
Merge pull request #483 from leewillis77/tax_warning_fixes

Avoid PHP warnings by correctly providing defaults
Custom Object Meta Support

Implements custom object meta support using the WordPress common meta
infrastructure.  Includes access functions for known WPEC object types.
Access functions mirror the WordPress 'post' meta functions.  Includes
conversion routine to move data from wpsc_meta to new architecture.
Includes functionality to allow developers to generate meta support for
new custom objects.

As discussed in #400
Changes based on review feedback

Fixed spaces, removed debug cruft, removed tick marks from SQL to be
sent to dbDelta
Item price column was the only column in the cart table without class
attributes.  Added class attributes to allow cart styling of the column
in the same manner that other columns can be styled.  

Removed a couple of extra spaces.

Issue #150
Unde previous (premature) commit
As discussed in #153

My suggestion is leave the 'wpsc_save_cart_item' action alone so we
don't break anything ,deprecate it.

Add a do_action('wpsc_before_save_cart_item', $cart_id, $this ) call
before the cart item record and cart meta is stored into the DB.

Add a do_action('wpsc_after_save_cart_item', $cart_id, $this ) call
after the cart item record and cart meta is stored into the DB.
leave the 'wpsc_save_cart_item' action alone so we don't break anything
,deprecate it.

Add a do_action('wpsc_before_save_cart_item', $cart_id, $this ) call
before the cart item record and cart meta is stored into the DB.

Add a do_action('wpsc_after_save_cart_item', $cart_id, $this ) call
after the cart item record and cart meta is stored into the DB.

Fixed indentation on one line 

As discussed in #154, pull request #153
update ifnore
Replaced wpsc_get_child_object_in_terms

More efficient query, more efficient function
Coding standards

Adjusted line breaks, parenthesis and spacing to conform to coding
standards
Revert "update ifnore"

This reverts commit 69dc9bf8d95321480a6d43876de232aaee6b19f4.
config file updates
renamed function
Center the fancy notification window on the screen