Add Dockerfile.opensuse-leap-latest

Merge pull request #498 from ldorau/Do-not-add-symlinks-to-clang-9-in-the-Docker.debian-testing-image

Do not add symlinks to clang-9 in the Docker.debian-testing image

Add Dockerfile.opensuse-tumbleweed-latest

Update version of PMDK in Docker images

Unless there's no other option we should never modify
the operating system, especially when it affects packages
unrelated to pmem. In this particular case,
if clang would point to something other than clang-9,
we could set CMAKE_C/CXX_COMPILER to the correct path.
(https://github.com/pmem/libpmemobj-cpp/pull/473#issuecomment-542313407)

... to the latest stable-1.7 containing a fix
required to build openSUSE Docker images.

Update readmes

Add Dockerfile.ubuntu-rolling

Add Dockerfile.debian-testing

Add Dockerfile.fedora-rawhide

Add Dockerfile.centos-8

.mailmap

Our machines have names spelt inconsistently or not set at all.

Two files have been committed using private email addresses, thus
check-license did not complain.

segment_vector: fix typo and doxygen comments

test: fix briefs of concurrent_hash_map test files

Merge back changes from stable 1.7

Fix array_modifiers test

Move containers out from experimental

This fixes warnings generated by doxygen.

and expose range_snapshotting_terator as typdef in containers.

There was an assignment instead of comparison in the test.

Use tx add range flags in vector and string containers