relax some warnings, fix others

CMakeIncludes/language_settings.cmake

common/cpp/src/asapo_fabric/CMakeLists.txt

common/cpp/src/asapo_fabric/common/fabric_context_impl.cpp

common/cpp/src/asapo_fabric/common/fabric_context_impl.h

...o_fabric/common/task/fabric_alive_check_response_task.cpp

common/cpp/src/asapo_fabric/server/fabric_server_impl.cpp

...po_fabric/server/task/fabric_handshake_accepting_task.cpp

consumer/api/python/CMakeLists_Linux.cmake

producer/api/python/CMakeLists_Linux.cmake

tests/automatic/asapo_fabric/client_lazy_initialization.cpp

tests/automatic/asapo_fabric/parallel_data_transfer.cpp

tests/automatic/asapo_fabric/server_not_running.cpp

tests/automatic/asapo_fabric/simple_data_transfer.cpp

...matic/system_io/write_data_to_file/write_data_to_file.cpp