core: sort each prelude.rs section
core: export either::{Either,Left,Right} from the prelude
core: Flesh out the either traits
Use x86-64 CABI for foreign function on arm target
automated merge
automated merge
rt: Add rust_try_get_current_task
Make foreign calls work outside of tasks. #4451
Rewrite the exchange allocator to work without an active scheduler. #4457
core: Make run_in_bare_thread safe. No memory-unsafety here
wip
wip