stagefright aacenc: Fix type definitions for 64 bit platforms

Also don't require LINUX to be defined, enable the MSVC typedefs
only within _MSC_VER.

This fixes a lot of warnings about dereferencing pointer 'winPtr'
breaking strict aliasing rules.

Change-Id: I4afbe0ed81295ebe6e5ee2c7f0fb0cc2dc83c89b

Author: mstorsjo

media/libstagefright/codecs/aacenc/basic_op/typedefs.h

@@ -77,12 +77,12 @@ typedef unsigned short UWord16;
 /*
  ********* define 32 bit signed/unsigned types & constants
  */
-typedef long Word32;
-typedef unsigned long UWord32;
+typedef int Word32;
+typedef unsigned int UWord32;
 
 
 
-#ifdef LINUX
+#ifndef _MSC_VER
 typedef long long Word64;
 typedef unsigned long long UWord64;
 #else