more work on python API

examples/worker/CMakeLists.txt

examples/worker/getnext_broker_python/CMakeLists.txt

examples/worker/getnext_broker_python/check_linux.sh

examples/worker/getnext_broker_python/check_windows.bat

examples/worker/getnext_broker_python/getnext.py

receiver/src/request.cpp

receiver/src/request_handler_db_write.cpp

receiver/src/request_handler_file_write.cpp

receiver/unittests/test_request.cpp

receiver/unittests/test_request_handler_db_writer.cpp

tests/manual/python_tests/test_p.py

worker/CMakeLists.txt

worker/api/cpp/CMakeLists.txt

worker/api/cpp/src/server_data_broker.cpp

worker/api/python/CMakeLists.txt

worker/api/python/asapo_worker.cpp

worker/api/python/asapo_worker.pxd

worker/api/python/asapo_worker.pyx

worker/api/python/asapo_worker.so

worker/api/python/dist/CMakeLists.txt