Add note about test-suites to guidelines

This was discussed a while back but it was never added to the
guidelines.

next/guidelines.md

@@ -49,7 +49,7 @@ Jump to: [top](#)
 </div>
 
 <p class="leftbar">
-These [IOCCC guidelines](guidelines.html) are version **28.34 2025-01-24**.
+These [IOCCC guidelines](guidelines.html) are version **28.35 2025-01-30**.
 </p>
 
 <p class="leftbar">
@@ -524,6 +524,14 @@ number of files](rules.html#max-files). If you do not follow these points, you
 are at a great risk of violating [Rule 17](rules.html#rule17)!
 </p>
 
+<p class="leftbar">
+**NOTE**: if you want to include a test-suite that requires a lot of files,
+please suggest this in your `remarks.md` and if your submission wins it can
+be done. In other words you should not use a tarball for a test-suite unless you
+have a very good reason for this (and if you do, make **SURE** you specify why
+in your `remarks.md`).
+</p>
+
 
 <div id="mkiocccentry">
 # `mkiocccentry`