[PATCH] version 2, __HALT_COMPILER();

Hi,

The last patch version still allowed:

<?php
define('COMPILER_HALT_OFFSET', 1);
?>

which would break any __HALT_COMPILER();

Interestingly enough, the current implementation makes this script a
fatal error:

<?php
define('COMPILER_HALT_OFFSET', 1);
__HALT_COMPILER();
?>

But not at the first define, instead it does at the __HALT_COMPILER();.
Once again a bug, as it should instead give a notice that
COMPILER_HALT_OFFSET is already defined at the userspace define().

Greg