Update Sizzle: Caching system respects DOM changes between uses of the same selector

diff --git a/src/sizzle b/src/sizzle
index 8b5f32b4f3664c695bd78d4042150bcaa02a631c..d47b174ef344eb4ac30482ca6308893ba023f2d6 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit 8b5f32b4f3664c695bd78d4042150bcaa02a631c
+Subproject commit d47b174ef344eb4ac30482ca6308893ba023f2d6