Revert "Remove lockfree-stack implementation that is no longer used"

This reverts commit 3d04e025bcffd1e583d502de4ee26625ea866b21.
diff --git a/binding.gyp b/binding.gyp
index d85cf0b..70dfd10 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -604,6 +604,7 @@
         'src/core/lib/support/log_windows.c',
         'src/core/lib/support/mpscq.c',
         'src/core/lib/support/murmur_hash.c',
+        'src/core/lib/support/stack_lockfree.c',
         'src/core/lib/support/string.c',
         'src/core/lib/support/string_posix.c',
         'src/core/lib/support/string_util_windows.c',