Create replacement netgroup.h if needed.

Remove #ifdef HAVE_NETGROUP_H wrapper.  ok djm@

auth-rhosts.c

@@ -21,9 +21,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
-#ifdef HAVE_NETGROUP_H
-# include <netgroup.h>
-#endif
+#include <netgroup.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <string.h>

configure.ac

@@ -477,7 +477,6 @@ AC_CHECK_HEADERS([ \
 	ndir.h \
 	net/if_tun.h \
 	netdb.h \
-	netgroup.h \
 	pam/pam_appl.h \
 	pty.h \
 	readpassphrase.h \
@@ -533,6 +532,7 @@ AC_CHECK_HEADERS([ \
     ifaddrs.h \
     libgen.h \
     paths.h \
+    netgroup.h \
     poll.h \
     stdint.h \
     sys/stat.h \