Force all harfbuzz allocations through our allocators.

Because of a shortcoming in harfbuzz, we can't easily force
all its allocations through our allocators.

We fudge it, with the addition of some macros to change
malloc/free/calloc into hb_malloc/hb_free/hb_calloc. To
prevent thread safety issues, we use our freetype lock
around calls to harfbuzz.

We stash the current context in a static var.

1 files changed, 0 insertions, 0 deletions

diff --git a/thirdparty/harfbuzz b/thirdparty/harfbuzz
-Subproject 7b98e93ea5e2d08377ec481006a87a3bc05df78
+Subproject 2ec7f66c6124219c83ce4ff64d96b75f0cf5956