cache_check
static int cache_check(char *, rpcvers_t *, char *);
switch (cache_check(hostname, versp, proto)) {
switch (cache_check(hostname, versp, proto)) {
if (!cache_check(host0, grl, n, &belong)) {
static int cache_check(char *host, char **grl, int grc, int *belong);
cache_okay = cache_check();