Description:
------------
When using the "-r" or "-run" command-line option to execute code, a custom exception handler is not invoked.

Reproduce code:
---------------
$ cat command_line_exception_handler.php
<?
function handler($e) {
    print "Caught exception " . $e->getMessage() . "\n";
}
set_exception_handler("handler");
throw new Exception("Hello, World!");


Expected result:
----------------
$ php command_line_exception_handler.php
Caught exception Hello, World!

$ php -r "require 'command_line_exception_handler.php';"
Caught exception Hello, World!

Actual result:
--------------
$ php command_line_exception_handler.php
Caught exception Hello, World!

$ php -r "require 'command_line_exception_handler.php';"

Fatal error: Uncaught exception 'Exception' with message 'Hello, World!' in /home/jbq/command_line_exception_handler.php:6
Stack trace:
#0 Command line code(1): require()
#1 {main}
  thrown in /home/jbq/command_line_exception_handler.php on line 6