* src/stf-parse.c (comp_term): handle multibyte terminals
	(compare_terminator): check all terminators
	(stf_parse_options_new): initialize terminator list
	(stf_parse_options_free): free terminator list
	(long_string_first): new
	(stf_parse_options_set_line_terminator_char): deleted
	(stf_parse_options_set_line_terminator): deleted
	(stf_parse_options_clear_line_terminator): new
	(stf_parse_options_add_line_terminator): new
	(stf_parse_options_remove_line_terminator): new
	* src/stf-parse.h: Change type of StfParseOptions_t->
	  terminator
	(stf_parse_options_set_line_terminator_char): deleted
	(stf_parse_options_set_line_terminator): deleted
	(stf_parse_options_clear_line_terminator): new
	(stf_parse_options_add_line_terminator): new
	(stf_parse_options_remove_line_terminator): new

	* dialog-stf-csv-page.c: fix previously forgotten #include