[cpp] Use cpp.Void instead of Void for pointers. Add memcpy function

std/cpp/NativeArray.hx

@@ -39,6 +39,9 @@ extern class NativeArray {
    @:nativeStaticExtension
 	public static function capacity<T>( inArray:Array<T> ) : Int { }
 
+   @:nativeStaticExtension
+	public static function getElementSize<T>( inArray:Array<T> ) : Int { }
+
 	public static inline function address<T>( inArray:Array<T>,inIndex:Int ) : Pointer<T> {
       return Pointer.arrayElem(inArray,inIndex);
    }

std/cpp/SizeT.hx

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C)2005-2016 Haxe Foundation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+ package cpp;
+
+@:native("size_t")
+@:scalar @:coreType @:notNull
+extern abstract SizeT from(Int) to(Int) {
+}

std/cpp/Stdlib.hx

@@ -4,17 +4,22 @@ package cpp;
 extern class Stdlib
 {
    @:native("malloc")
-   public static function nativeMalloc(bytes:Int) : cpp.RawPointer<Void> return null;
+   public static function nativeMalloc(bytes:Int) : cpp.RawPointer<cpp.Void> return null;
    @:native("calloc")
-   public static function nativeCalloc(bytes:Int) : cpp.RawPointer<Void> return null;
+   public static function nativeCalloc(bytes:Int) : cpp.RawPointer<cpp.Void> return null;
    @:native("realloc")
-   public static function nativeRealloc(inPtr:cpp.RawPointer<Void>,bytes:Int) : cpp.RawPointer<Void> return null;
+   public static function nativeRealloc(inPtr:cpp.RawPointer<cpp.Void>,bytes:Int) : cpp.RawPointer<cpp.Void> return null;
    @:native("free")
-   public static function nativeFree(ptr:cpp.RawPointer<Void>) : Void { }
+   public static function nativeFree(ptr:cpp.RawPointer<cpp.Void>) : Void { }
+   @:native("memcpy")
+   public static function nativeMemcpy(dest:cpp.RawPointer<cpp.Void>, src:cpp.RawConstPointer<cpp.Void>, bytes:Int) : Void { }
 
    @:native("hx::ClassSizeOf") @:templatedCall
    public static function sizeof<T>(t:T) : Int { }
 
+   inline public static function memcpy<DEST,SRC>(dest:cpp.Pointer<DEST>, src:cpp.ConstPointer<SRC>, bytes:Int) : Void
+      nativeMemcpy(cast dest.ptr, cast src.ptr, bytes);
+
    inline public static function malloc<T>(bytes:Int) : cpp.Pointer<T>
       return cast nativeMalloc(bytes);