str_replace_char_set_c

	num_replaced.i4.v = str_replace_char_set_c(string.i1a.r, length.i4.v,
						   chars_to_replac.i1a.r,
						   replace_char.i1.v)

	This routine replaces every occurrence of a specified set of
	characters in a string with another character.

	string		string to perform character replacements in
	length		length of string (If a value of zero is passed,
			the length of the string will be calculated.)
	chars_to_replac	null terminated set of characters to be replaced
	replace_char	replacement character

	This function returns status values as follows:

	number of characters replaced

	This function requires the following include files:

	cbslib_h

	Related functions:

	str_replace_character_set_c, ,
	str_replace_char_c, str_replace_character_c, str_translate_characters_c,
	str_find_character_c, str_find_character_set_c,
	str_replace_string_c, str_replace_bracketed_c, str_find_string_c,
	str_find_last_string_c, str_character_count_c, str_expand_tabs_c,
	str_make_printable_c, str_find_not_in_character_set_c

	C/C++ usage:

	static char	string[] = "string";
	static const char	chars_to_replac[] = "nr";
	char	replace_char = '_';
	int	num_replaced;
	int	length = 0;

	num_replaced = str_replace_char_set_c(string,length,chars_to_replac,
					      replace_char);