Disable buggy_getaddrinfo configure test when cross-compiling with IPv6 support

Signed-off-by: Vanya Sergeev <vsergeev at gmail.com>

--- python-2.7.2.orig/configure.in	2012-04-22 06:52:09.361809545 -0400
+++ python-2.7.2/configure.in	2012-04-22 06:56:37.900634194 -0400
@@ -3128,7 +3128,7 @@
 
 AC_MSG_RESULT($ac_cv_buggy_getaddrinfo)
 
-if test $have_getaddrinfo = no -o "$ac_cv_buggy_getaddrinfo" = yes
+if test $have_getaddrinfo = no || test "$cross_compiling" != "yes" -a "$ac_cv_buggy_getaddrinfo" = yes
 then
 	if test $ipv6 = yes
 	then