Fixed double-free in the digest authentication handling.

# Found and Reported by Stefan Esser

Fixed crash in ext\standard\tests\general_functions\bug32647.php on Windows

reorder and prevent memleak: bailout after free()

- No extra spaces before #ifndef

Improved PHP extension loading mechanism with support for module dependencies and conflicts

hmm, backing out this change, as it seems to cause problems with user-space
streams and filters (the ZE needs to close them before it blows away the
user-space code.

Noticed by Dmitr

hmm, backing out this change, as it seems to cause problems with user-space
streams and filters (the ZE needs to close them before it blows away the
user-space code.

Noticed by Dmitry. Still need to find out how to avoid double-closing streams.

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silence warning

Avoid double-freeing streams.
This can happen because all streams are registered as resources;
the engine also tracks them in the open_files global.

Avoid the potential for double-fr

Avoid double-freeing streams.
This can happen because all streams are registered as resources;
the engine also tracks them in the open_files global.

Avoid the potential for double-freeing by simply making streams exposed to the
engine have no closer for the engine to call; they will already be in the
resource list, and thus will be shut down properly at request end.

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__halt_compiler() patch interface

fix bugs #32742 (segmentation fault when the stream with a wrapper is not closed),
#32171 (Userspace stream wrapper crashes PHP)

- Reorder request shutdown calls: Call all __destruct() functions and
register_shutdown_function() callbacks before flushing output buffers
and sending headers.
- Fixes bug #30578 and

- Reorder request shutdown calls: Call all __destruct() functions and
register_shutdown_function() callbacks before flushing output buffers
and sending headers.
- Fixes bug #30578 and possibly others related to output buffering.

# Added some comments too about what happens and where

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rename

add INT_MAX and INT_SIZE constants.
#64bit machines are getting wider usage and these are needed

added a server variable PHP_AUTH_DIGEST to support HTTP Digest Authentication.

- Fix typos

- Notices shouldn't be treatedas errors and thus not being conidered to be
converted to exceptions.

- We don't need to block those here (works as it works with normal error
overloading)

This makes more sense. (Someone might actually use php_error_docref0() :)

cs fix (really annoying :)

- Fix bug #28568 (known_post_content_types is not thread safe).
# What is eventually necessiated is entire SAPI redesign, I think.

- Fix leaks with registered shutdown functions.

- Fix bug #27728 (Can't return within a zend_try{} or the previous
state isn't restored.

removing php_output_activate Fix for bug#30397

- Revert patch until it is discussed

Fix for Bug #30397