Remove redundant callback, simplify API

- Allow partial type conversion support for objects.
- Add support for object to string conversion from userspace by method
__toString() and add a test.

Tests show updating consts must happen once at runtime (revert optimization).
Add tests for static properties.

Fix static properties.
#
# There's only an errormessage missing which i'll wommit as soon as i find out
# how to do it best. But besides that damn message everything works now and all

Fix static properties.
#
# There's only an errormessage missing which i'll wommit as soon as i find out
# how to do it best. But besides that damn message everything works now and all
# inheritance rules apply.
#

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Synch/Unify error messages related to function/method calls

Fix warnings

Restrict scope of inline functions to compile unit

Submitted by: Jason Greene <jason@inetgurus.net>

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

Fix isset()/empty() for non-trivial object elements
(API change - read_property now accepts an extra element)
Fixes bug #24436

Fix bug #24499

Add get_dim callback

whitespace

fixlet

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

Fix destructor visibility

Fixed bug #24279 (__get() crash when no value is returned)

updating license information in the headers.

Fix casing issues in access level checks

rm namespace leftovers

MEGA-patch: namespaces are R.I.P.

Assume lazy consensus regarding the cast_object() patch. *Only* implemented
from a internals perspective. This callback has been very useful for both
ext/mono and ext/simplexml

Make use optimized string lowering

Change get_class() so that it returns qualified names for namespaced
classes.

*HEADS UP*: get_class_name() handler interface is changed, now it should
allocate the space it returns w

Change get_class() so that it returns qualified names for namespaced
classes.

*HEADS UP*: get_class_name() handler interface is changed, now it should
allocate the space it returns with emalloc, and the users free it. If
anyone has problems with it or has suggestions how to do it without this -
please tell.

Also: make function_exists() understand namespaces.

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Split ZEND_NAMESPACE into user and internal namespaces. Hope this is
okay with engine folks.