Signed-off-by: Reinhold Kainhofer <reinhold@kainhofer.com>

V5.4: Fix evaluate_for_categories (order amounts calculated without quantities), Fix evaluate_for_manufacturers (wrong variable used); Fix protected warning

V5.1: Fix border case with shipping cost 0 being interpreted as non-existing due to php's behavior of the empty function

VirtueMartModelState::getStates and VirtueMartModelCountry::getCountries changes the internal cache ->_data, but does NOT modify ->_id...
The proper fix would be in VM's model classes to set the id to -1.

However, as a workaround we can call setId twice to ensure the cache is always invalidated and getData returns the proper object

Version 4.0: Fix globals warning; Add Values_Debug variable; Add contains_any/contains_all functions

V3.96: Apply bugfixes in the setCartPrices function (from the VM repo), which I had to copy from vmpsplugin.php

Version 3.0.1: Fix for PHP 5.3 which does not like getdate()['day'], but needs the getdate return value to be stored in a temporary variable

Version 3.0.0: Added functions in the rules; added packaging variables; variable substitutions in the name variable

Version 2.4.7: Convert postal code to uppercase before checking/extracting UK/Canadian postal code parts

Version 2.4.6: Try to fix ShippingWithTax - The shippingValue was not correctly reset to exclude taxes.

Version 2.3.0: Add NoShipping to not offer any shipping at all; fix shipping costs when Shipping= is omitted

Version 2.2.2: Fix default tax rule (copied code over from vmpsplugin's setCartPrices function), disabled discountBeforeTaxBill variable, which is hardly ever available and thus produces php warnings in the server log

Version 2.2: Add length unit conversions; add tilde operator to check variable start; Fix chained comparisons