Merge branch 'gc-rewrite' into 'master'

GC rewrite

See merge request !55
21 jobs from master in 48 minutes and 35 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #16517
build

08:24

 
  Test
passed #16518
test:cargo:api

00:02

passed #16520
test:cargo:compiler

00:56

passed #16519
test:cargo:ir

00:02

passed #16521
test:cargo:runtime

00:06

passed #16527
testjit:binops

00:07

passed #16528
testjit:cmpops

00:05

passed #16529
testjit:controlflow

00:03

passed #16530
testjit:convops

00:03

passed #16531
testjit:double

00:07

passed #16532
testjit:memops

00:03

passed #16526
testjit:milestones

00:04

passed #16533
testjit:otherops

00:02

passed #16534
testjit:rpython

08:36

passed #16535
testjit:som

04:06

passed #16525
testmuc:test_binop

00:30

passed #16524
testmuc:test_cmp

00:33

passed #16522
testmuc:test_simple

00:34

passed #16523
testmuc:test_swapstack

00:34

 
  Mubench
passed #16536
mubench

22:57

 
  Rustfmt
passed #16537
rustfmt

00:32