Test for getaddrinfo() broken on Tru64 UNIX 5.1

[Albert Chin]

m4/getaddrinfo.m4 tests for getaddrinfo with:
  AC_CHECK_FUNCS(getaddrinfo

This assumes getaddrinfo is available on the system under the name
`getaddrinfo'. Not so on Tru64 UNIX 5.1 where <netdb.h> has:
  #if defined (_SOCKADDR_LEN) || defined (_XOPEN_SOURCE_EXTENDED)
  #define getaddrinfo ngetaddrinfo
  #else
  #define getaddrinfo ogetaddrinfo
  #endif

The correct method to test for getaddrinfo on this system is to
include <netdb.h> and try linking a program using getaddrinfo(). Patch
attached.

-- 
albert chin (address@hidden)

a
Description: getaddrinfo patch