The stable bugfix release.
It is planned that this will be the last release of the v0.11 branch.

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

 - [Alex Sharov](https://github.com/AskAlexSharov) and Erigon team for reporting and testing.
 - [Andrew Ashikhmin](https://gitflic.ru/user/yperbasis) for contributing.

New:
----

 - Ability to customise `MDBX_LOCK_SUFFIX`, `MDBX_DATANAME`, `MDBX_LOCKNAME` just by predefine ones during build.
 - Added to [`mdbx::env_managed`](https://libmdbx.dqdkfa.ru/group__cxx__api.html#classmdbx_1_1env__managed)'s methods a few overloads with `const char* pathname` parameter (C++ API).

Fixes:
------

 - Fixed hang copy-with-compactification of a corrupted DB
   or in case the volume of output pages is a multiple of `MDBX_ENVCOPY_WRITEBUF`.
 - Fixed standalone non-CMake build on MacOS (`#include AvailabilityMacros.h>`).
 - Fixed unexpected `MDBX_PAGE_FULL` error in rare cases with large database page sizes.

Minors:
-------

 - Minor fixes Doxygen references, comments, descriptions, etc.
 - Fixed copy&paste typo inside `meta_checktxnid()`.
 - Minor fix `meta_checktxnid()` to avoid assertion in debug mode.
 - Minor fix `mdbx_env_set_geometry()` to avoid returning `EINVAL` in particular rare cases.
 - Minor refine/fix batch-get testcase for large page size.
 - Added `--pagesize NN` option to long-stotastic test script.
 - Updated Valgrind-suppressions file for modern GCC.
 - Fixed `has no symbols` warning from Apple's ranlib.

For earlier versions please refer to the git's tags and the [ChangeLog](https://gitflic.ru/project/erthink/libmdbx/blob?file=ChangeLog.md).

18 files changed, 318 insertions(+), 178 deletions(-)
Signed-off-by: Леонид Юрьев (Leonid Yuriev) <leo@yuriev.ru>
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