Add vendor dependencies as part git repo

vendor/github.com/modern-go/reflect2/go_above_19.go

@@ -0,0 +1,17 @@
+//+build go1.9
+
+package reflect2
+
+import (
+	"unsafe"
+)
+
+//go:linkname resolveTypeOff reflect.resolveTypeOff
+func resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer
+
+//go:linkname makemap reflect.makemap
+func makemap(rtype unsafe.Pointer, cap int) (m unsafe.Pointer)
+
+func makeMapWithSize(rtype unsafe.Pointer, cap int) unsafe.Pointer {
+	return makemap(rtype, cap)
+}