libmdbx: switch to original amalgamated source code (v0.9.1.18)

Amalgamated source code is the recommended form for
embedding libmdbx in non-CMake build systems. This amalgamated
version contains a minimum of files, is fully ready for use,
and make impossible a number of errors.

To upgrade or switch to a different version, just unpack
to the `src` subdirectory a corresponding `libmdbx-amalgamated-X_Y_Z.zip`
at the https://github.com/erthink/libmdbx/releases.

For instance, the https://github.com/erthink/libmdbx/releases/download/v0.9.2/libmdbx-amalgamated-0_9_2.zip
for the next release.

--

Minimal changes have been made to the build configuration:

1. For use the standard `DllMain()` entry of libmdbx:
   - added the `MDBX_BUILD_SHARED_LIBRARY=1` option;
   - removed the `MDBX_CONFIG_MANUAL_TLS_CALLBACK` option;
   - deleted the `miranda.c` file containing only `DllMain()`
     with the `mdbx_dll_handle()` call, now this is done by the library itself.

2. Removed refs to extra files (that missing in the amalgamated source code):
   - for building `libmdbx.dll` only the `mdbx.h` and `mdbx.c` are used,
     but not `mdbx.c++` for a C++ API;
   - for building the `mdbx_chk`, `mdbx_load`, and `mdbx_dump` utilities
     only it own sources are used.

--

Last libmdbx changes:

 - Fixed missing installation of `mdbx.h++`.
 - Fixed use of obsolete `__noreturn`.
 - Fixed use of `yield` instruction on ARM if unsupported.
 - Added pthread workaround for buggy toolchain/cmake/buildroot.
 - Fixed use of `pthread_yield()` for non-GLIBC.
 - Fixed use of `RegGetValueA()` on Windows 2000/XP.
 - Fixed use of `GetTickCount64()` on Windows 2000/XP.
 - Fixed opening DB on a network shares (in the exclusive mode).
 - Fixed copy&paste typos.
 - Fixed minor false-positive GCC warning.

1 files changed, 0 insertions, 32 deletions

diff --git a/libs/libmdbx/src/AUTHORS b/libs/libmdbx/src/AUTHORS
deleted file mode 100644
index 10910e5744..0000000000
--- a/libs/libmdbx/src/AUTHORS
+++ /dev/null
@@ -1,32 +0,0 @@
-Contributors
-============
-
-Alexey Naumov <alexey.naumov@gmail.com>
-Chris Mikkelson <cmikk@qwest.net>
-Claude Brisson <claude.brisson@gmail.com>
-David Barbour <dmbarbour@gmail.com>
-David Wilson <dw@botanicus.net>
-dreamsxin <dreamsxin@126.com>
-Hallvard Furuseth <hallvard@openldap.org>, <h.b.furuseth@usit.uio.no>
-Heiko Becker <heirecka@exherbo.org>
-Howard Chu <hyc@openldap.org>, <hyc@symas.com>
-Ignacio Casal Quinteiro <ignacio.casal@nice-software.com>
-James Rouzier <rouzier@gmail.com>
-Jean-Christophe DUBOIS <jcd@tribudubois.net>
-John Hewson <john@jahewson.com>
-Klaus Malorny <klaus.malorny@knipp.de>
-Kurt Zeilenga <kurt.zeilenga@isode.com>
-Leonid Yuriev <leo@yuriev.ru>, <lyuryev@ptsecurity.com>
-Lorenz Bauer <lmb@cloudflare.com>
-Luke Yeager <lyeager@nvidia.com>
-Martin Hedenfalk <martin@bzero.se>
-Ondrej Kuznik <ondrej.kuznik@acision.com>
-Orivej Desh <orivej@gmx.fr>
-Oskari Timperi <oskari.timperi@iki.fi>
-Pavel Medvedev <pmedvedev@gmail.com>
-Philipp Storz <philipp.storz@bareos.com>
-Quanah Gibson-Mount <quanah@openldap.org>
-Salvador Ortiz <sog@msg.com.mx>
-Sebastien Launay <sebastien@slaunay.fr>
-Vladimir Romanov <vromanov@gmail.com>
-Zano Foundation <crypto.sowle@gmail.com>