Merge removal of quickbook 1.6 warning.

I forgot to check this in to trunk, and then accidentally included it with some
circular buffer changes which is why the history is a little odd.


[SVN r86208]

tools/quickbook

@@ -1 +1 @@
-Subproject commit 11e4e0d9673a52cde63cb0ec06d688f412947ddf
+Subproject commit 2cba84f33f5f5e73f5111d3c0f7c5666c8742c2e