Log Message:
(devel/MoarVM) Update 2020.08 to 2020.09

New in 2020.09

6model:
+ [497748f7] Split `flags` in struct MVMCollectable into `flags1` and `flags2`
+ [effc5549] P6int: make set_int and get_int globally available
+ [a526f424] Remove tiny indirection from MVMHash_at_key/bind_key
+ [9c6bb7ab] Deserialization: rely on MVMHash being the known repr
+ [f029d3c7] Deserialization: use P6int repr being known in read_ref
+ [88efde45] Deserialization: rely on P6str REPR being known
+ [b37770a7] Deserialization: rely on known REPR in read_array_var/int/str
+ [9caec0fc] Deserialization: rely on knowledge of owned_objects REPR
+ [2dfe1c53] Introduce MVMP6str_get_str and MVMP6str_set_str
+ [429bd31f] Introduce MVM_VMArray_bind_pos
+ [f01930b5] Introduce MVM_VMArray_push
+ [1fdfdf59] Fix endless recursion and segfault in dump_p6opaque
+ [124fe2be] copy_to should call MVM_gc_write_barrier with the *new* key's address

Core:
+ [381e3d69] MVMObjectId.gen2_add is now uintptr_t, instead of an actual pointer
+ [50d3311c] Better specialize boolification of boxed Num

Debug Server:

+ [fc9dd762] Reorder alloc/free of `c_key_name` in the debug server

IO:
+ [b243d017] Fix MVM_file_isexecutable() when being root
+ [96d32a1a] Don't duplicate file existence checks

Libraries:
+ [29ce8171] Update libuv to version 1.39.0

Other:
+ [b74b94d5,c61c18a2,2c294cbf,215854f8,040e9d63,2a271e16,aba462b2,
   3043135c,0418b7af,9b423954,54899926,c3df90ea,07c7b4fe,5e146efb,
   14d11334,2bf3a4e2,cff7a0cd,1aacf8f4,4af853d7,0f0d2103,ebd07472,
   9d0f1b32,1b20ca88,2181d48d,e6e5cc90,41175efc,1413f9ce,2cce7319,
   1ea0e520,04843cb1,a02c8e70,d85f38d8,d359a605,9f83de80,58193f0a,
   d9c31aef,5660597a,e81219d4,be2f129c,b13d3de8,b08f8d45,f03ba463,
   287d41eb,bac1ae1c,df72ab3d,d35c6e39,b0dac61c,ba847c25,754490c7,
   390f30d4,a644e33f,2c7f96c2,282ea895,ac6c5be0,976a070c,0ac64285,
   8a9586ee,8e24dc61,46d60c7b,3cf44324,6c4ba42f,e541297e,fbfc8a0f,
   ef6a37b,e3ad7ced,590bac47,322c2e0b,25c70bfe] Introduce new hash \ 
implementation based on Robin Hood Hash
+ [8a3857,489ab696,63665640,004ce49c] make moar --dump use memmem to find \ 
"MOARVM\r\n" string

Platform:
+ [87ad486f,07721999] Fix MoarVM building on Sparc 64

Profiler:
+ [6441fa6b] Return `MVMHeapSnapshotSeen *` from seen in heapsnapshot.c

Tooling/Build:
+ [c3941772] Add 'macroify_mallocs.p6' script