Fixing alignment issue allowing serialization to run on ARM.

src/serialize.cc

Index: src/serialize.cc
===================================================================
--- src/serialize.cc	(revision 1145)
+++ src/serialize.cc	(working copy)
@@ -814,8 +814,7 @@
 
   void Update(Address start_address) {
     for (int i = 0; i < offsets_.length(); i++) {
-      Address* p = reinterpret_cast<Address*>(start_address + offsets_[i]);
-      *p = addresses_[i];
+      memcpy(start_address + offsets_[i], &addresses_[i], sizeof(Address));
     }
   }