Autocheck for snprintf, and use sprintf if it is not available.
Remove declaration of h_errno, since it is supposedly declared in netdb.h.
Changes proposed by itojun.
diff --git a/configure.in b/configure.in
index 61aaa97..4ac7377 100644
--- a/configure.in
+++ b/configure.in
@@ -1179,7 +1179,7 @@
nice pathconf pause plock poll pthread_init \
putenv readlink \
select setegid seteuid setgid \
- setlocale setregid setreuid setsid setpgid setuid setvbuf \
+ setlocale setregid setreuid setsid setpgid setuid setvbuf snprintf \
sigaction siginterrupt sigrelse strftime strptime symlink sysconf \
tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
truncate uname waitpid _getpty getpriority)