bits shared by the stringobject and unicodeobject implementations (andpossibly other modules, in a not too distant future). the stuff in here is included into relevant places; see the individualsource files for details. --------------------------------------------------------------------the following defines used by the different modules: STRINGLIB_CHAR     the type used to hold a character (char or Py_UNICODE) STRINGLIB_EMPTY     a PyObject representing the empty string int STRINGLIB_CMP(STRINGLIB_CHAR*, STRINGLIB_CHAR*, Py_ssize_t)     compares two strings. returns 0 if they match, and non-zero if not. Py_ssize_t STRINGLIB_LEN(PyObject*)     returns the length of the given string object (which must be of the    right type) PyObject* STRINGLIB_NEW(STRINGLIB_CHAR*, Py_ssize_t)     creates a new string object STRINGLIB_CHAR* STRINGLIB_STR(PyObject*)     returns the pointer to the character data for the given string    object (which must be of the right type)