Finish fopen-wrappers rename.

There might be more systems which do not support chroot, so we check
for the existence of it.

Additionally, if chroot is not supported, the warn_not_available function
is invoked now.

- chroot does not work on windows

- Added an extra chdir("/"); as sugested by Sascha

- Added the chroot function for changing root in a script.
#- This can be usefull when using PHP in a shell environment, or when PHP
# runs as CGI which needs a little more security

- Make all places use MAXPATHLEN in the same way. It includes the
terminating NULL.

Hardcode all functions which are mentioned in the Large File Support Spec

http://ewe3.sas.com/standards/large.file/specs/api+.007.html

- Fix build

fix #7573
closedir() now really close the directory - used to stay open 'cause the
default-directory resource was "remembered" for arg-less calls.

update my email.

Use zend_register_list_destructors_ex() instead.

Mega-patch to get better resource information for modules.
* Fixed a bug in zend_rsrc_list_get_rsrc_type()
* Switched register_list_destructors() to use
zend_register_list_destruc

Mega-patch to get better resource information for modules.
* Fixed a bug in zend_rsrc_list_get_rsrc_type()
* Switched register_list_destructors() to use
zend_register_list_destructors_ex() instead
* Updated all relevant modules to provide the resource type name
to register_list_destructors() call
* Updated var_dump() to output resource type name instead of number

@- Made resource type names visible, e.g. var_dump() and
@ get_resource_type() display "file" for file resources. (Andrei)

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Fixed crash (bus error) in readdir() and session cleanup when compiled
with Sun CC.

Fix readdir bug in libc5
@Fix readdir bug in libc5
# If libc5 receives 0 in *result of readdir_r, it just returns error
# That's a clear bug, so this is a workaround.

- Fix dir.c
- Begin cleanup of php_error_cb()

Solaris/x86 insists of having a large buffer for storing the result of
readdir_r(), otherwise it will segfault.

PR: #6479

Fixed opendir() thoroughly

Fixed a bug in opendir(), which prevented readdir() from working properly if
the $dir argument wasn't explicitly specified

- Change register_internal_class to zend_register_internal_class for
- consistency.
- Andrei: I'm still thinking about the _ex you want me to implement

- ARG_COUNT(ht) -> ZEND_NUM_ARGS() mega patch

Fix Win32 build

add opendir to VIRTUAL_DIR

chdir returns 0 on success, compare against it

Use reentrant version of readdir. If the target platform does not support
the POSIX-like readdir_r, we fall back to readdir. In ZTS mode, this will
cause php_readdir_r calls to be serialized.

Update the license with the new clause 6