patch 8.0.1735: flexible array member feature not supported by HP-UX

Problem:    Flexible array member feature not supported by HP-UX. (John
            Marriott)
Solution:   Do not use the flexible array member feature of C99.
diff --git a/src/auto/configure b/src/auto/configure
index 6673de8..7a65bec 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -4188,14 +4188,10 @@
 main ()
 {
 
-  struct with_flexible_member {
-    int count;  // comment
-    char text[]; // another comment
-  };
   enum {
-    one,
-    two,
-    three,
+    one,   // one comment
+    two,   // two comments
+    three, // three comments
   };
   long long int a = 1;
   long long unsigned b = 2;