tomteb/carbon-lang: == Clone of https://github.com/carbon-language/carbon-lang.git == @ 57a2715f10b138543b8744a4e3e232d60cd1eb82

Strom: 57a2715f10

Geoff Romer 57a2715f10 Remove support for `addr` (#6375)		5 mesiacov pred
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builtin	2b8fdf3417 Switch the prelude to use `ref` instead of `addr` (#6359)	5 mesiacov pred
overloaded	57a2715f10 Remove support for `addr` (#6375)	5 mesiacov pred