Description:
------------
Class Constants cannot use  expressions, apparently they can only be numbers or strings.

This could be similar to bug #25323, but php does not crash, just returns a parse error.

Reproduce code:
---------------
<?php

class TestConstBreak
{
	const 	SOME_EXPRESSION = 5+5;
	const 	SOME_BIG_EXPRESSOIN = (5 + 2) * 3;
	const 	LS_EXPRESSION	= 5<<2;
	const	SOME_STRING_EXPRESSION = "foo"."bar";
}

?>


Expected result:
----------------
The expected result is to be able to use expressions in class constants without causing parse errors.

Actual result:
--------------
Parse error: parse error, unexpected '+', expecting ',' or ';' in php5Breakage.php on line 5

When I comment out line 5:

Parse error: parse error, unexpected '(' in php5Breakage.php on line 6

And when I comment out line 6:

Parse error: parse error, unexpected T_SL, expecting ',' or ';' in php5Breakage.php on line 7

And when I comment out line 7:

Parse error: parse error, unexpected ".", expecting ',' or ';' in php5Breakage.php on line 7