Print message of HTTP fragmentation > 2 incompatibility.

We can't reliably distinguish HTTP data from other data on port 80 when fragmentation is used.
HTTP method code has a special case which tries to find HTTP method when fragmentation = 1 or 2 is used,
but not for other values.

goodbyedpi.c

@@ -248,6 +248,12 @@ int main(int argc, char *argv[]) {
  (do_fragment_https ? https_fragment_size : 0),
  do_host, do_host_removespace, do_additional_space);
 
+ if (do_fragment_http && http_fragment_size > 2) {
+ printf("WARNING: HTTP fragmentation values > 2 are not fully compatible "
+ "with other options. Please use values <= 2 or disable HTTP fragmentation "
+ "completely.\n");
+ }
+
  printf("\nOpening filter\n");
  filter_num = 0;