Use a single grammar.

Speeds up quickbook a fair bit, hopefully will make up for the anchors
change which was quite costly.

[SVN r67634]

tools/quickbook

@@ -1 +1 @@
-Subproject commit 915ae8a31af6f7e2f3a541be685b2257953e65a0
+Subproject commit 51d09f5631e5f555635cb51f834580c390106df2