mdbx: release v0.9.2

Acknowledgements:
-----------------

 - Jens Alfke (Mobile Architect at [Couchbase](https://www.couchbase.com/)) for [NimDBX](https://github.com/snej/nimdbx).
 - Clément Renault (CTO at [MeiliSearch](https://www.meilisearch.com/)) for [mdbx-rs](https://github.com/Kerollmops/mdbx-rs).
 - Alex Sharov (Go-Lang Teach Lead at [TurboGeth/Ethereum](https://ethereum.org/)) for an extreme test cases and bug reporting.
 - George Hazan (CTO at [Miranda NG](https://www.miranda-ng.org/)) for bug reporting.
 - [Positive Technologies](https://www.ptsecurity.com/) for funding and [The Standoff](https://standoff365.com/).

Added features:
---------------

 - Provided package for [buildroot](https://buildroot.org/).
 - Binding for Nim is [available](https://github.com/snej/nimdbx) now by Jens Alfke.
 - Added `mdbx_env_delete()` for deletion an environment files in a proper and multiprocess-safe way.
 - Added `mdbx_txn_commit_ex()` with collecting latency information.
 - Fast completion pure nested transactions.
 - Added `LIBMDBX_INLINE_API` macro and inline versions of some API functions.
 - Added `mdbx_cursor_copy()` function.
 - Extended tests for checking cursor tracking.
 - Added `MDBX_SET_LOWERBOUND` operation for `mdbx_cursor_get()`.

Fixes:
------

 - 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.
 - Added workaround for broken `DEFINE_ENUM_FLAG_OPERATORS` from Windows SDK.
 - Fixed cursor state after multimap/dupsort repeated deletes (https://github.com/erthink/libmdbx/issues/121).
 - Added `SIGPIPE` suppression for internal thread during `mdbx_env_copy()`.
 - Fixed extra-rare `MDBX_KEY_EXIST` error during `mdbx_commit()` (https://github.com/erthink/libmdbx/issues/131).
 - Fixed spilled pages checking (https://github.com/erthink/libmdbx/issues/126).
 - Fixed `mdbx_load` for 'plain text' and without `-s name` cases (https://github.com/erthink/libmdbx/issues/136).
 - Fixed save/restore/commit of cursors for nested transactions.
 - Fixed cursors state in rare/special cases (move next beyond end-of-data, after deletion and so on).
 - Added workaround for MSVC 19.28 (Visual Studio 16.8) (but may still hang during compilation).
 - Fixed paranoidal Clang C++ UB for bitwise operations with flags defined by enums.
 - Fixed large pages checking (for compatibility and to avoid false-positive errors from `mdbx_chk`).
 - Added workaround for Wine (https://github.com/miranda-ng/miranda-ng/issues/1209).
 - Fixed `ERROR_NOT_SUPPORTED` while opening DB by UNC pathnames (https://github.com/miranda-ng/miranda-ng/issues/2627).
 - Added handling `EXCEPTION_POSSIBLE_DEADLOCK` condition for Windows.

TODO for v0.9.3:
----------------

 - Engage new terminology (https://github.com/erthink/libmdbx/issues/137).
 - Rework/speedup the implementation of the dirty page list (lazy compactification, lazy sorting via merge).
 - Resolve few TODOs (https://github.com/erthink/libmdbx/issues/123, https://github.com/erthink/libmdbx/issues/124, https://github.com/erthink/libmdbx/issues/127, https://github.com/erthink/libmdbx/issues/128, https://github.com/erthink/libmdbx/issues/132, https://github.com/erthink/libmdbx/issues/115).
 - Finalize C++ API (few typos and trivia bugs are still likely for now).
 - Packages for ROSA Linux, ALT Linux, Fedora/RHEL, Debian/Ubuntu.

Change-Id: I1f0ac4505052f169e36b326243e5d56497b9c037
Signed-off-by: Leonid Yuriev <leo@yuriev.ru>

ChangeLog.md

@@ -11,7 +11,7 @@ ChangeLog
  - Finalize C++ API (few typos and trivia bugs are still likely for now).
  - Packages for ROSA Linux, ALT Linux, Fedora/RHEL, Debian/Ubuntu.
 
-## v0.9.2 (scheduled at 2020-11-26)
+## v0.9.2 scheduled at 2020-11-27
 
 Acknowledgements:
 

appveyor.yml

@@ -1,4 +1,4 @@
-version: 0.9.1.{build}
+version: 0.9.2.{build}
 
 environment:
   matrix: