Add support in test framework for signal handling

[igchor]

This change is 

[lukaszstolarczuk]

Reviewed 8 of 9 files at r1, all commit messages.
Reviewable status: 8 of 9 files reviewed, 3 unresolved discussions (waiting on @igchor and @lukaszstolarczuk)

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CONTRIBUTING.md line 177 at r1 (raw file):

applications do not crash. It is useful for Rapidcheck tests (it makes shrinking possible) and for ctest.

To turn this feature on, set env variable PMEMSTREAM_HANDLE_SIGNAL_FOR_DEBUG=1 and add test_register_sighandlers()

perhaps mark a function with ``

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CONTRIBUTING.md line 177 at r1 (raw file):

applications do not crash. It is useful for Rapidcheck tests (it makes shrinking possible) and for ctest.

To turn this feature on, set env variable PMEMSTREAM_HANDLE_SIGNAL_FOR_DEBUG=1 and add test_register_sighandlers()

this will work only in c++ tests, isn't it...?

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tests/common/test_backtrace.h line 2 at r1 (raw file):

// SPDX-License-Identifier: BSD-3-Clause
/* Copyright 2015-2021, Intel Corporation */

-2022