[wpiutil] Import foonathan memory (#4306)

upstream_utils/memory_files/config_impl.hpp

@@ -0,0 +1,34 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+// Copyright (C) 2015-2020 Jonathan Müller <jonathanmueller.dev@gmail.com>
+// This file is subject to the license terms in the LICENSE file
+// found in the top-level directory of this distribution.
+
+#pragma once
+
+#include <cstddef>
+
+//=== options ===//
+#define WPI_MEMORY_CHECK_ALLOCATION_SIZE 1
+#define WPI_MEMORY_IMPL_DEFAULT_ALLOCATOR heap_allocator
+#ifdef NDEBUG
+#define WPI_MEMORY_DEBUG_ASSERT 0
+#define WPI_MEMORY_DEBUG_FILL 0
+#define WPI_MEMORY_DEBUG_FENCE 0
+#define WPI_MEMORY_DEBUG_LEAK_CHECK 0
+#define WPI_MEMORY_DEBUG_POINTER_CHECK 0
+#define WPI_MEMORY_DEBUG_DOUBLE_DEALLOC_CHECK 0
+#else
+#define WPI_MEMORY_DEBUG_ASSERT 1
+#define WPI_MEMORY_DEBUG_FILL 1
+#define WPI_MEMORY_DEBUG_FENCE 8
+#define WPI_MEMORY_DEBUG_LEAK_CHECK 1
+#define WPI_MEMORY_DEBUG_POINTER_CHECK 1
+#define WPI_MEMORY_DEBUG_DOUBLE_DEALLOC_CHECK 1
+#endif
+#define WPI_MEMORY_EXTERN_TEMPLATE 1
+#define WPI_MEMORY_TEMPORARY_STACK_MODE 2
+
+#define WPI_MEMORY_NO_NODE_SIZE 1