lmdbxx: Bump version to newer fork

dev-db/lmdbxx/lmdbxx-0.9.21.0.recipe

@@ -0,0 +1,21 @@
+SUMMARY="A C++ wrapper for the LMDB database engine"
+DESCRIPTION="LMDBXX is C++ wrapper for the compact, fast, powerful, and robust LMDB"
+HOMEPAGE="https://github.com/hoytech/lmdbxx"
+COPYRIGHT="2015-2016 Arto Bendiken
+2019-2021 Doug Hoyte"
+LICENSE="Unlicense"
+REVISION="1"
+SOURCE_URI="https://github.com/hoytech/lmdbxx/archive/$portVersion.tar.gz"
+CHECKSUM_SHA256="0ab138ed4ba04ccbc4849088f4fd46cdbde28635e3bda0cd5ff3a39296258e94"
+
+ARCHITECTURES="any"
+
+PROVIDES="
+	lmdbxx = $portVersion
+	"
+
+INSTALL()
+{
+	mkdir -p $includeDir
+	cp lmdb++.h $includeDir/
+}