In legislative parlance, the sponsor of a particular bill is said to be figuratively “carrying” the measure. But when you’re sponsoring overhauls to the state’s marriage and adoption laws, that phrasing applies a bit more literally. “I’ve got, like, two shopping bags,” Kelly McGuire Burke, the House sponsor of the 200-plus page bills, said on Monday. She noted that they were “eco-friendly shopping bags,” which is perhaps appropriate for a Democrat from a south …