Merge branch 'ike/frame_exist' into 'master'

coq-lambda-rust.opam

theories/lang/lib/arc.v

theories/lang/lib/spawn.v

theories/lifetime/model/accessors.v

theories/lifetime/model/borrow.v

theories/lifetime/model/borrow_sep.v

theories/lifetime/model/primitive.v

theories/typing/lib/arc.v

theories/typing/lib/brandedvec.v

theories/typing/lib/cell.v

theories/typing/lib/ghostcell.v

theories/typing/lib/mutex/mutex.v

theories/typing/lib/rc/rc.v

theories/typing/lib/rc/weak.v

theories/typing/lib/refcell/ref_code.v

theories/typing/lib/refcell/refcell_code.v

theories/typing/lib/refcell/refmut_code.v

theories/typing/lib/rwlock/rwlock.v

theories/typing/lib/rwlock/rwlock_code.v

theories/typing/lib/take_mut.v