[libaxx] Add operator new[] and delete[]

Change-Id: Id20e803461a6e8c2b3484d094a5483763c06ed0d

libaxx/include/new

@@ -1,7 +1,9 @@
 #ifndef LIBAXX_NEW
 #define LIBAXX_NEW
 
-inline void * operator new(unsigned int size, void * ptr) noexcept {
+#include <stddef.h>
+
+inline void * operator new(size_t size, void * ptr) noexcept {
   return ptr;
 }
 

libaxx/src/new.cpp

@@ -2,10 +2,18 @@
 
 // See the C++ standard, section 3.7.4 for those definitions
 
-void * operator new (unsigned int size) {
+void * operator new(size_t size) {
   return malloc(size);
 }
 
-void operator delete (void * ptr) noexcept {
+void operator delete(void * ptr) noexcept {
   free(ptr);
 }
+
+void * operator new[](size_t size) {
+    return ::operator new(size);
+}
+
+void operator delete[](void * ptr) noexcept {
+    ::operator delete(ptr);
+}