Merge tag 'v0.11.7'

The stable risen release after the Github's intentional malicious disaster.

We have migrated to a reliable trusted infrastructure
-----------------------------------------------------

The origin for now is at [GitFlic](https://gitflic.ru/project/erthink/libmdbx)
since on 2022-04-15 the Github administration, without any warning nor
explanation, deleted _libmdbx_ along with a lot of other projects,
simultaneously blocking access for many developers.
For the same reason ~~Github~~ is blacklisted forever.

GitFlic already support Russian and English languages, plan to support more,
including 和 中文. You are welcome!

New:
----

 - Added the `tools-static` make target to build statically linked MDBX tools.
 - Support for Microsoft Visual Studio 2022.
 - Support build by MinGW' make from command line without CMake.
 - Added `mdbx::filesystem` C++ API namespace that corresponds to `std::filesystem` or `std::experimental::filesystem`.
 - Created [website](https://libmdbx.website.yandexcloud.net/) for online auto-generated documentation.
 - Used `todo4recovery://erased_by_github/` for dead (or temporarily lost) resources deleted by ~~Github~~.
 - Added `--loglevel=` command-line option to the `mdbx_test` tool.
 - Added few fast smoke-like tests into CMake builds.

Fixes:
------

 - Fixed a race between starting a transaction and creating a DBI descriptor that could lead to `SIGSEGV` in the cursor tracking code.
 - Clarified description of `MDBX_EPERM` error returned from `mdbx_env_set_geometry()`.
 - Fixed non-promoting the parent transaction to be dirty in case the undo of the geometry update failed during abortion of a nested transaction.
 - Resolved linking issues with `libstdc++fs`/`libc++fs`/`libc++experimental` for C++ `std::filesystem` or `std::experimental::filesystem` for legacy compilers.
 - Added workaround for GNU Make 3.81 and earlier.
 - Added workaround for Elbrus/LCC 1.25 compiler bug of class inline `static constexpr` member field.
 - [Fixed](erigontech/erigon#3874) minor assertion regression (only debug builds were affected).
 - Fixed detection of `C++20` concepts accessibility.
 - Fixed detection of Clang's LTO availability for Android.
 - Fixed build for ARM/ARM64 by MSVC.
 - Fixed non-x86 Windows builds with `MDBX_WITHOUT_MSVC_CRT=ON` and `MDBX_BUILD_SHARED_LIBRARY=ON`.

Minors:
-------

 - Resolve minor MSVC warnings: avoid `/INCREMENTAL[:YES]` with `/LTCG`, `/W4` with `/W3`, the `C5105` warning.
 - Switched to using `MDBX_EPERM` instead of `MDBX_RESULT_TRUE' to indicate that the geometry cannot be updated.
 - Added `NULL` checking during memory allocation inside `mdbx_chk`.
 - Resolved all warnings from MinGW while used without CMake.
 - Added inheretable `target_include_directories()` to `CMakeLists.txt` for easy integration.
 - Added build-time checks and paranoid runtime assertions for the `off_t` arguments of `fcntl()` which are used for locking.
 - Added `-Wno-lto-type-mismatch` to avoid false-positive warnings from old GCC during LTO-enabled builds.
 - Added checking for TID (system thread id) to avoid hang on 32-bit Bionic/Android  within `pthread_mutex_lock()`.
 - Reworked `MDBX_BUILD_TARGET` of CMake builds.
 - Added `CMAKE_HOST_ARCH` and `CMAKE_HOST_CAN_RUN_EXECUTABLES_BUILT_FOR_TARGET`.

Signed-off-by: Леонид Юрьев (Leonid Yuriev) <[email protected]>

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