update to automake 1.4/autoconf 2.13

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@5460 ec53bebd-3082-4978-b11e-865c3cabbd6b

cf/need-proto.m4

@@ -7,6 +7,7 @@ dnl
 dnl AC_NEED_PROTO(includes, function)
 
 AC_DEFUN(AC_NEED_PROTO, [
+if test "$ac_cv_func_$2+set" != set -o "$ac_cv_func_$2" = yes; then
 AC_CACHE_CHECK([if $2 needs a prototype], ac_cv_func_$2_noproto,
 AC_TRY_COMPILE([$1],
 [struct foo { int foo; } xx;
@@ -17,10 +18,8 @@ eval "ac_cv_func_$2_noproto=yes",
 eval "ac_cv_func_$2_noproto=no"))
 define([foo], [NEED_]translit($2, [a-z], [A-Z])[_PROTO])
 if test "$ac_cv_func_$2_noproto" = yes; then
-	AC_DEFINE(foo)
+	AC_DEFINE(foo, 1, [define if the system is missing a prototype for $2()])
 fi
-: << END
-@@@syms="$syms foo"@@@
-END
 undefine([foo])
+fi
 ])