boehmgc: 8.0.6 -> 8.2.2

https://github.com/ivmai/bdwgc/releases/tag/v8.2.2

Drop mcfgthread.patch (upstreamed).

pkgs/development/libraries/boehm-gc/default.nix

@@ -2,7 +2,7 @@
 , stdenv
 , fetchurl
 , autoreconfHook
-# doc: https://github.com/ivmai/bdwgc/blob/v8.0.6/doc/README.macros (LARGE_CONFIG)
+# doc: https://github.com/ivmai/bdwgc/blob/v8.2.2/doc/README.macros (LARGE_CONFIG)
 , enableLargeConfig ? false
 , enableMmap ? true
 , nixVersions
@@ -10,22 +10,19 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "boehm-gc";
-  version = "8.0.6";
+  version = "8.2.2";
 
   src = fetchurl {
     urls = [
-      "https://www.hboehm.info/gc/gc_source/gc-${finalAttrs.version}.tar.gz"
+      # "https://www.hboehm.info/gc/gc_source/gc-${finalAttrs.version}.tar.gz"
       "https://github.com/ivmai/bdwgc/releases/download/v${finalAttrs.version}/gc-${finalAttrs.version}.tar.gz"
     ];
-    sha256 = "sha256-O0kUq8n6dlk1lnc+TaZx1+1NU5Dj1G+/Ll8VXhIb6hE=";
+    sha256 = "sha256-8wEHvLBi4JIKeQ//+lbZUSNIVGhZNkwjoUviZLOINqA=";
   };
 
   outputs = [ "out" "dev" "doc" ];
   separateDebugInfo = stdenv.isLinux && stdenv.hostPlatform.libc != "musl";
 
-  # boehm-gc whitelists GCC threading models
-  patches = lib.optional stdenv.hostPlatform.isMinGW ./mcfgthread.patch;
-
   configureFlags = [
     "--enable-cplusplus"
     "--with-libatomic-ops=none"
@@ -33,8 +30,6 @@ stdenv.mkDerivation (finalAttrs: {
   ++ lib.optional enableMmap "--enable-mmap"
   ++ lib.optional enableLargeConfig "--enable-large-config";
 
-  nativeBuildInputs = lib.optional stdenv.hostPlatform.isMinGW autoreconfHook;
-
   doCheck = true;
 
   enableParallelBuilding = true;

pkgs/development/libraries/boehm-gc/mcfgthread.patch

@@ -1,11 +0,0 @@
---- a/configure.ac
-+++ b/configure.ac
-@@ -277,7 +277,7 @@ case "$THREADS" in
-         ;;
-     esac
-     ;;
-- win32)
-+ win32 | mcf)
-     AC_DEFINE(GC_THREADS)
-     use_parallel_mark=$enable_parallel_mark
-     if test "${enable_parallel_mark}" != no \