Switch some functions to use new zend_lookup_ns_class() methods. This
means that they will accept both simple and fully qualified class names.

allow class_exists() to work with namespaces too.
add CLASS_IS_NAMESPACE macro

fix typo

fix parameterless get_declared_classes call

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

improve namespace name hanfling

fix get_declared_classes()

make get_declared_classes() work with namespaces (based on Tal Peer's patch)

Eliminate TSRMLS_FETCH() calls in destroy_op_array() and zend_get_class_entry().

Add support for interfaces

Fix get_parent_class()

zend_config.h (and its Win32 version) is already included by zend.h

The string.h is already avaliable through zend.h, so the manual inclusion
is not necessary.

Added a check to ensure that string.h is avaliable before trying to use it.

Thanks Andi.

Added missing header.

Fixed bug #15734 (Added an optional parameter to get_defined_constants(),
which if passed, will include information regarding who created the constant).

Fixed bug #19506 (get_extension_funcs() can now retrieve a list of built-in
Zend Engine functions, if "zend" is specified as the module name).
Made get_extension_funcs() on failure.

- Added some missing CVS $Id$ tags, headers and footers.

ZTS fixes.

fix 'use of uninitialized variable' warning

MFZE2

Bump year.

- MFZE1

- Revert as the patch doesn't compile

- MFZE1