fix leaks: bug #24831

Simplify code using XOR

Fix test and add missing initialization

ntroduce infrastructure for supplying information about arguments,
including:

- Whether or not to pass by ref (replaces the old arg_types, with arg_info)
- Argument name (for future

ntroduce infrastructure for supplying information about arguments,
including:

- Whether or not to pass by ref (replaces the old arg_types, with arg_info)
- Argument name (for future use, maybe introspection)
- Class/Interface name (for type hints)
- If a class/interface name is available, whether to allow a null instance

Both user and builtin functions share the same data structures.

To declare a builtin function that expects its first arg to be an instance
of class 'Person', its second argument as a regular arg, and its third by
reference, use:

ZEND_BEGIN_ARG_INFO(my_func_arg_info, 0)
ZEND_ARG_OBJ_INFO(0, someone, Person, 1)
ZEND_ARG_PASS_INFO(0)
ZEND_ARG_PASS_INFO(1)
ZEND_END_ARG_INFO();

and use my_func_arg_info as the arg_info parameter to the ZEND_FE() family
of macros.

The first arg to each ZEND_ARG_*() macro is whether or not to pass by ref.

The boolean arg to ZEND_BEGIN_ARG_INFO() tells the engine whether to treat
the arguments for which there's no explicit information as pass by reference
or not.
The boolean argument to ZEND_ARG_OBJ_INFO() (4th arg) is whether or not to allownull values.

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Generalize fetch_class

Finish the array overloading patch

Get rid of an opcode

Support overloading of $foo["bar"] += "baz"

Improve array overloading - support unset($foo["bar"])

fix compare

use zend_binary_strncasecmp

make clone and throw coexist peacefully

fix leaks with class constants (bug #24699)

make __clone call case insensitive, just as other calls are

Fix another HANDLE_NUMERIC bug. Looks like you opened Pandora's box, Sterling ;)

Remove useless code

Support references in foreach()
Syntax:
foreach ($arr as &$val)
foreach ($arr as $key => &$val)

Remove namespace leftovers

Fix bug in the verification of interface-function implementation

More cleanup for assign-op handling of objects

Rework zend_do_declare_property and related code into one code base

Initial support for overloading of array syntax for objects (very initial)

Allow final private methods
#
# Declaring a method private and final would only be an error for an abstract
# class. But at the moment the method is defined and it's modifiers are checked

Allow final private methods
#
# Declaring a method private and final would only be an error for an abstract
# class. But at the moment the method is defined and it's modifiers are checked
# we do not know whether or not we have an abstract class. It could already be
# abstract but it also become abstract later.
#
# Since i made the mistake in first place i remove the check now.
#
# Providing the correct test would slow down the compiler becuase we'd have to
# iterate through all methods on all abstract classes and check for this. I
# guess we can live without. Or does anybody wants this to be implemented ?

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enable Classname() constructor to be called via parent::__constructor()

- Nuke CG(in_clone_method)