Update Sizzle: adds custom performance suite for testing across multiple selector...

diff --git a/src/sizzle b/src/sizzle
index 3be03d8b98d6404b4b535c66db8f06d9dbd54405..c51f59a1bf6a5fe917839a98568ed003d3596feb 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit 3be03d8b98d6404b4b535c66db8f06d9dbd54405
+Subproject commit c51f59a1bf6a5fe917839a98568ed003d3596feb