* conform/conformtest.pl: Implement optional-type.
* resolv/netdb.h: Include <netinet/in.h> not <sys/socket.h>. Include
<rpc/netdb.h> only if __USE_MISC. Include <stdint.h> instead of
defining uint32_t here. Define IPPORT_RESERVED.
(struct hostent): Type of h_length element is int.
(getnameinfo): Type of flags parameter is unsigned int.
* inet/getnameinfo.c (getnameinfo): flags argument is unsigned.
* conform/data/netdb.h-data: Add many missing definitions.
ccd4b479dc