Merge r9606, r9607, and r9609 into 3.6 branch.

src/utils.h

Index: src/utils.h
===================================================================
--- src/utils.h	(revision 9610)
+++ src/utils.h	(working copy)
@@ -168,7 +168,6 @@
 
 template <typename T, typename U>
 static inline bool IsAligned(T value, U alignment) {
-  ASSERT(IsPowerOf2(alignment));
   return (value & (alignment - 1)) == 0;
 }