FEATURE: New URL Merges

Here are a bunch of new merges related to urls.

xxFULLURL will give your store’s current custom rewritten url (Custom URL, or default)
e.g. http://domain.com/store/p/58-product-name.aspx  or
e.g. http://domain.com/product_name.htm
xxRAWURL will give the raw url for that item, cat, etc.
e.g. http://domain.com/productdetails.aspx?itemid=58

And here are the merges:

## ITEMFULLURL##, ## ITEMRAWURL##
## CATFULLURL##, ## CATRAWURL##
## ROOTCATFULLURL##, ## ROOTCATRAWURL##
## MFGFULLURL##, ## MFGRAWURL##
## ATTRIBUTEFULLURL##, ## ATTRIBUTERAWURL##
## CONTENTPAGEFULLURL##, ## CONTENTPAGERAWURL##

Also added ## ATTRIBUTEURL## and ## CONTENTPAGEURL##