Win32: move to WinXP SP2 APIs and IE 6.0 APIs

As stated in NEWS, VLC will not work on XP < SP2 and 2003 < SP1

configure.ac

@@ -320,8 +320,8 @@ case "${host_os}" in
   *mingw32* | *cygwin* | *wince* | *mingwce*)
     AC_CHECK_TOOL(WINDRES, windres, :)
     AC_CHECK_TOOL(OBJCOPY, objcopy, :)
-    AC_DEFINE([_WIN32_WINNT], 0x0501, [Define to '0x0501' for Windows XP APIs.])
-    AC_DEFINE([_WIN32_IE], 0x0501, [Define to '0x0501' for IE 5.01 (and shell) APIs.])
+    AC_DEFINE([_WIN32_WINNT], 0x0502, [Define to '0x0502' for Windows XP SP2 APIs.])
+    AC_DEFINE([_WIN32_IE], 0x0600, [Define to '0x0600' for IE 6.0 (and shell) APIs.])
 
     case "${host_os}" in
       *wince* | *mingwce* | *mingw32ce*)