Ports/bdwgc: Update bdwgc to version 8.2.4

Ports/bdwgc/patches/0005-Make-the-collector-build-with-threads.patch

@@ -12,16 +12,17 @@ In an extremely limited way for now:
     make threads.
 - No fork handling
     Seems borked for unknown reasons.
+Co-Authored-By: EWouters <6179932+EWouters@users.noreply.github.com>
 ---
  CMakeLists.txt | 6 +++++-
  tests/test.c   | 2 +-
  2 files changed, 6 insertions(+), 2 deletions(-)
 
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 50dba74..6fcb550 100644
+index ddb04eece816e6c0440376210b514f964b66e3b1..c9e776d87d550f10505d89027a153d1cad575608 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -77,7 +77,11 @@ option(enable_register_main_static_data "Perform the initial guess of data root
+@@ -86,7 +86,11 @@ option(enable_register_main_static_data "Perform the initial guess of data root
  option(enable_checksums "Report erroneously cleared dirty bits" OFF)
  option(enable_werror "Pass -Werror to the C compiler (treat warnings as errors)" OFF)
  option(enable_single_obj_compilation "Compile all libgc source files into single .o" OFF)
@@ -32,10 +33,10 @@ index 50dba74..6fcb550 100644
 +
 +OPTION(enable_handle_fork "Attempt to ensure a usable collector after fork()" OFF)
  option(disable_handle_fork "Prohibit installation of pthread_atfork() handlers" OFF)
+ option(enable_emscripten_asyncify "Use Emscripten asyncify feature" OFF)
  option(install_headers "Install header and pkg-config metadata files" ON)
- option(without_libatomic_ops "Use atomic_ops.h in libatomic_ops/src" OFF)
 diff --git a/tests/test.c b/tests/test.c
-index b41a300..0ad4ea5 100644
+index 8afc0fe7a1d2fdba644b9f762c6c34ee19bac4db..5d7d59e2e734da4fee44144edf9f33838a8ed0ed 100644
 --- a/tests/test.c
 +++ b/tests/test.c
 @@ -43,7 +43,7 @@