add files

[chirp] / lmdb

diff --git a/lmdb b/lmdb
new file mode 160000 (submodule)
index 0000000..da9aeda
--- /dev/null
+++ b/lmdb
@@ -0,0 +1 @@
+Subproject commit da9aeda08c3ff710a0d47d61a079f5a905b0a10a