Add a generic meta data api for streams.

Another big commit (tm).

Main Changes:
- Implement a socket transport layer for use by all code that needs to open
some kind of "special" socket for network or IPC.
- Extension

Another big commit (tm).

Main Changes:
- Implement a socket transport layer for use by all code that needs to open
some kind of "special" socket for network or IPC.
- Extensions can register (and override) transports.
- Implement ftruncate() on streams via the ioctl-alike option interface.
- Implement mmap() on streams via the ioctl-alike option interface.
- Implement generic crypto API via the ioctl-alike option interface.
(currently only supports OpenSSL, but could support other SSL toolkits,
and other crypto transport protocols).

Impact:
- tcp sockets can be overloaded by the openssl capable sockets at runtime,
removing the link-time requirement for ssl:// and https:// sockets and
streams.
- checking stream types using PHP_STREAM_IS_SOCKET is deprecated, since
there are now a range of possible socket-type streams.

Working towards:
- socket servers using the new transport layer
- mmap support under win32
- Cleaner code.

# I will be updating the win32 build to add the new files shortly
# after this commit.

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rename macro argument so that it does not partially match the string.

fixes a warning on unixware

Added locking to streams.
Allow PHP to automatically release locks on files when terminating the
stream.
Fixed bugs in the handling of the 3rd optional parameter to flock().

MFB: Bunch of streams related fixes.

Implement new filter API, stage 1.
This breaks user-space filters (for the time being), and those
weird convert.* filters in ext/standard/filters.c

The filters stack has been separat

Implement new filter API, stage 1.
This breaks user-space filters (for the time being), and those
weird convert.* filters in ext/standard/filters.c

The filters stack has been separated into one chain for read and one chain
for write.

The user-space stream_filter_append() type functions currently only operate
on the read chain. They need extending to work with the write chain too.

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Move some of the streams header into supplementary files

# Just when you thought you had learned your way around the streams code;
# I like to keep you all on your toes!

Moving away from ANSI stdio for plain files.

Added feature request #9173 (added stream_get_line(), this function will
read either the specified number of bytes or until the ending string is
found).

Added missing definitions.

Fix for bug #21406; infinite loop during filter flushing.

Expose stream_filters_hash so that it can be searched by stream_get_filters()

- Fix warnings on UnixWare

Bump year.

Merge streams changes from branch.

Make the macro use the function and not the other macro as discussed
with Wez.

php_stream replacement for fprintf
#Agreed by Wez - I will use this mysel soon.

correct define: silences compiler warning in http_fopen_wrapper.c

A better fix for bug #20110.

Refine stream_select() to work with streams that have data in their read
buffers.
When selecting for read, the streams are examined; if any of them have
pending read data, no actual selec

Refine stream_select() to work with streams that have data in their read
buffers.
When selecting for read, the streams are examined; if any of them have
pending read data, no actual select(2) call is performed; instead the
streams with buffered data are returned; just like a regular select
call.
Prevent erroneous warning in stream_select when obtaining the fd.

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made fgets() binary safe.
php_stream_gets is now a macro which calls php_stream_get_line. The latter
has an option argument to return the number of bytes in the line.
Functions like fgetc

made fgets() binary safe.
php_stream_gets is now a macro which calls php_stream_get_line. The latter
has an option argument to return the number of bytes in the line.
Functions like fgetcsv(), fgetss() can be made binary safe by calling
php_stream_get_line directly.

# HEADS UP: You will need to make clean after updating your CVS, as the
# binary signature has changed.

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Fixed bug #19971 (optimized the file() function).
The file() function is now also binary safe.

This seems to resolve the issues with fgets.
I've moved EOF detection into the streams layer; a stream reader
implementation should set stream->eof when it detects EOF.
Fixed test for use

This seems to resolve the issues with fgets.
I've moved EOF detection into the streams layer; a stream reader
implementation should set stream->eof when it detects EOF.
Fixed test for user streams - it still fails but that is due to an output
buffering bug.

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replace dont_block with a flag.

Improve the general behaviour of stream_gets and fix its semantics
with regard to sockets. The behaviour should be aligned with PHP 4.2 now.
This has been verified to some degree.

If

Improve the general behaviour of stream_gets and fix its semantics
with regard to sockets. The behaviour should be aligned with PHP 4.2 now.
This has been verified to some degree.

If the underlying stream operations block when no new data is readable,
we need to take extra precautions.

If there is buffered data available, we check for a EOL. If it exists,
we pass the data immediately back to the caller. This saves a call
to the read implementation and will not block where blocking
is not necessary at all.

If the stream buffer contains more data than the caller requested,
we can also avoid that costly step and simply return that data.

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