[m-rev.] diff: Enable parallel marking with MinGW-w64.

[Peter Wang]

configure.ac:
	As above.
---
 configure.ac | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index f3fbe6e..8b1a719 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3165,8 +3165,7 @@ case "$host" in
         BOEHM_CFLAGS_FOR_THREADS="-DGC_THREADS $WIN32_GC_THREADLIB"
         THREAD_LIBS="-lpthread"
         ENABLE_BOEHM_THREAD_LOCAL_ALLOC="-DTHREAD_LOCAL_ALLOC"
-        # Disable parallel marking on Windows until next upgrade.
-        # ENABLE_BOEHM_PARALLEL_MARK="-DPARALLEL_MARK"
+        ENABLE_BOEHM_PARALLEL_MARK="-DPARALLEL_MARK"
         ;;
 
     *apple*darwin*)
-- 
2.1.2