rollup merge of #20754: nikomatsakis/int-feature
rollup merge of #20754: nikomatsakis/int-feature

Conflicts:
	src/test/compile-fail/borrowck-move-out-of-overloaded-auto-deref.rs
	src/test/compile-fail/issue-2590.rs
	src/test/compile-fail/lint-stability.rs
	src/test/compile-fail/slice-mut-2.rs
	src/test/compile-fail/std-uncopyable-atomics.rs

waynenilsen/rand,shepmaster/rand,ebfull/rand,bluss/rand,achanda/rand,arthurprs/rand,retep998/rand,huonw/rand,GrahamDennis/rand,bhickey/rand