using enumerable_thread_local.

they will be set inside tx so we need p<>.

Implementation of insert_or_assign in concurrent_hash_map

Fix regression in add_test_generic()

Remove duplicated cmake scripts

Add compatibility tests (with different libpmemobj-cpp versions)

Fix tests_clang_release_cpp11_no_valgrind in run-build.sh

Fix types in enumerable_thread_specific_access test

On travis, without this flag rm asks for input if it should
"remove write-protected regular file".

Set CMAKE_BUILD_TYPE to Release instead of Debug.

typo fixes

It fixes the following compilation error on openSUSE Leap:
In file included from /libpmemobj-cpp/tests/enumerable_thread_specific_access/enumerable_thread_specific_access.cpp:33:0:
/libpmemobj-cpp/tests/enumerable_thread_specific_access/enumerable_thread_specific_access.cpp: In function 'void test(pmem::obj::pool<root>&)':
/libpmemobj-cpp/tests/enumerable_thread_specific_access/enumerable_thread_specific_access.cpp:100:19: error: conversion to 'size_t {aka long unsigned int}' from 'int' may change the sign of the result [-Werror=sign-conversion]
   UT_ASSERT(n_100 + n_zeros == concurrency);
             ~~~~~~^~~
/libpmemobj-cpp/tests/common/unittest.hpp:130:11: note: in definition of macro 'UT_ASSERT'
  ((void)((cnd) ||                                                       \
           ^~~

The add_test_common() function requires the TEST_CASE variable
to be defined.
It fixes regression introduced by b969cb5f.

Insert_or_assign from std::unordered_map (since C++17) without hints, additional method with heterogeneous key-type and tests

travis: update valgrind to 3.15

Different spell checkers find different typos.

Refactor enumerable_thread_specific

The add_test_common() function requires the TEST_CASE variable
to be defined.
It fixes regression introduced by b969cb5f.

change building behavior for gcc 4.8.5

Now, thread id of each thread is also an index to persistent storage
for enumerbale_thread_specific (this index is the same for all
instances of enumerable_thread_specifc which certain thread uses).

This change means that persistent storage can be bigger than neccesary
in some cases (it must be as big as largest 'thread id + 1'). This
implementation also allowed for removal of read lock in local() method.
Now, it's enough to check atomic size variable and if size < thread id
just return element with this index.

This commit also removes local(bool) method beacuse it's not possible to
tell whether certain element existed before or not.

* Replace v<> with volatile_state

* Use std::shared_lock and std::unique_lock instead of
  hand made scoped_lock

* Implement custom thread_id assigning mechanism so that slots in
  persistent storage can be reused after a thread exited

This is needed for enumerable_thread_specific tests
in which we need guarantee on number of threads executing
simultaneously.

Add SCRIPT parameter to add_test_generic()

detect if volatile_state is supported

force isntall containers, even if container tests are disabled

gcc 4.8.5 supports C++11 but does not support expanding variadic
template in lambda expression. If you want to build libpmemobj-cpp with
gcc 4.8.5 you must disable building and installing containers by setting
flag ENABLE_CONTAINERS=OFF

Fix hash map erase deadlock

Add doxygen comments describing namespaces

Update version of PMDK in vcpkg

Update version of PMDK in vcpkg
in order to have the defragmentation feature
(change corresponding to commit bd646ca1).

Update version of PMDK in Docker images

Update version of PMDK in Docker images
in order to have the defragmentation feature.

pandoc is required by the newest PMDK.

It makes possible to use a cmake script from a different test
and prevents from adding the same cmake script for many tests.