Add a new memcmpstart to use instead of strcmpstart when the thing we are...

    return strncasecmp(s1+(n1-n2), s2, n2);

}

/** Compare the value of the string <b>prefix</b> with the start of the

 * <b>memlen</b>-byte memory chunk at <b>mem</b>.  Return as for strcmp.

 *

 * [As memcmp(mem, prefix, strlen(prefix)) but returns -1 if memlen is less

 * than strlen(prefix).]

 */

int

memcmpstart(const void *mem, size_t memlen,

                const char *prefix)

{

  size_t plen = strlen(prefix);

  if (memlen < plen)

    return -1;

  return memcmp(mem, prefix, plen);

}

/** Return a pointer to the first char of s that is not whitespace and

 * not a comment, or to the terminating NUL if no such character exists.

 */

int strcmpend(const char *s1, const char *s2) ATTR_PURE ATTR_NONNULL((1,2));

int strcasecmpend(const char *s1, const char *s2)

  ATTR_PURE ATTR_NONNULL((1,2));

int memcmpstart(const void *mem, size_t memlen,

                const char *prefix) ATTR_PURE;

void tor_strstrip(char *s, const char *strip) ATTR_NONNULL((1,2));

long tor_parse_long(const char *s, int base, long min,

                    long max, int *ok, char **next);