Description:
------------
Functions in PHP are case-insensitive. This is valid also for __HALT_COMPILER(). Phar::setStub however looks for case-sensitive variant.

Test script:
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$phar = new Phar("resource.phar");
try {
	$phar->setStub("<?php __halt_compiler();");
} catch (Exception $e) {
	echo get_class($e) . ": " . $e->getMessage() . "\n";
}


Expected result:
----------------
Nothing

Actual result:
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PharException: illegal stub for phar "C:/Download/resource.phar"