Change some integer types to make the x64 Win32 platform happier.

src/utils.h

Index: src/utils.h
===================================================================
--- src/utils.h	(revision 2742)
+++ src/utils.h	(working copy)
@@ -114,8 +114,10 @@
 
 
 // Returns true if (addr + offset) is aligned.
-static inline bool IsAddressAligned(Address addr, int alignment, int offset) {
-  int offs = OffsetFrom(addr + offset);
+static inline bool IsAddressAligned(Address addr,
+                                    intptr_t alignment,
+                                    int offset) {
+  intptr_t offs = OffsetFrom(addr + offset);
   return IsAligned(offs, alignment);
 }
 
@@ -446,15 +448,15 @@
 
 
 inline Vector<const char> CStrVector(const char* data) {
-  return Vector<const char>(data, strlen(data));
+  return Vector<const char>(data, static_cast<int>(strlen(data)));
 }
 
 inline Vector<char> MutableCStrVector(char* data) {
-  return Vector<char>(data, strlen(data));
+  return Vector<char>(data, static_cast<int>(strlen(data)));
 }
 
 inline Vector<char> MutableCStrVector(char* data, int max) {
-  int length = strlen(data);
+  int length = static_cast<int>(strlen(data));
   return Vector<char>(data, (length < max) ? length : max);
 }