Eat the whitespace in front of code snippet ignored blocks to prevent extra spaces from showing up with the text after the ignored block closes.

[SVN r37154]

tools/quickbook

@@ -1 +1 @@
-Subproject commit a150aa8a9c70788668ba96c264ff6114568ac64a
+Subproject commit 5c2cc69d555ec768fcf92d540b7f1eeb0301d48f