rem: if ( strcmp(str,wd_map[i].str) == 0){
add: if ( strcasecmp(str,wd_map[i].str) == 0){
context: icalrecurrencetype_weekday icalrecur_string_to_weekday(const char* str){    int i;    for (i=0; wd_map[i].wd  != ICAL_NO_WEEKDAY; i++) {	if ( strcmp(str,wd_map[i].str) == 0){	    return wd_map[i].wd;	}    }    return ICAL_NO_WEEKDAY;}