Move all config constants into single file. (#1192)

* Initial pass at factoring out C++ configuration into a single file.

* Expose config through Python.

* Forward declarations.

* Fixes with Python extensions

* Remove old code.

* Consistent naming for constants.

* Fixes

* Fix linting.

* More linting.

* Whitespace

* rename config -> _config.

* Move config inside a class.

* update naming convention

* Fix linting.

* More linting

* More linting.

* Add in some more constants.

* Fix linting

src/common/lib/python/common_extension.h

@@ -49,8 +49,6 @@ PyObject *check_simple_value(PyObject *self, PyObject *args);
 PyObject *PyTask_to_string(PyObject *, PyObject *args);
 PyObject *PyTask_from_string(PyObject *, PyObject *args);
 
-PyObject *compute_put_id(PyObject *self, PyObject *args);
-
 PyObject *PyTask_make(TaskSpec *task_spec, int64_t task_size);
 
 #endif /* COMMON_EXTENSION_H */