mman-win32 — POSIX mmap() shim for Windows
==========================================

Files in this directory (mman.h, mman.c) are vendored verbatim from the
mman-win32 project, which is a MinGW-friendly implementation of the
POSIX mmap() family for Windows.

Upstream:
  https://github.com/witwall/mman-win32
  (mirror of the original https://code.google.com/p/mman-win32/)

The upstream project's README states:

  "License: MIT License"

Reproduced under that license, the standard MIT text is:

----------------------------------------------------------------------
The MIT License (MIT)

Copyright (c) the mman-win32 contributors.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------

Why this is bundled
-------------------

drogonR vendors the Drogon C++ HTTP framework. Drogon's CacheFile.cc
(used by the multipart upload path) calls POSIX mmap()/munmap() on
non-Windows platforms; on Windows it falls back to <mman.h>, which is
NOT part of the MinGW / Rtools toolchain. mman-win32 supplies that
header and a minimal implementation backed by the Win32 file-mapping
API, so drogonR can build under Rtools without modifying the upstream
Drogon source.
