Integrate Shanes patch that allows specifying the cwd and environment
for the child process created by proc_open().

Add optional signal parameter to proc_terminate.

Add proc_terminate() function to forcibly kill off a process created
with proc_open().

Fixed compile warning.

Relieve scripts of the burden of ensuring that all pipes are closed prior
to calling proc_close().
Implement proc_get_status(resource $process) which returns an array of
information about

Relieve scripts of the burden of ensuring that all pipes are closed prior
to calling proc_close().
Implement proc_get_status(resource $process) which returns an array of
information about a process created with proc_open().
The information includes:
array(
"command" => string "name of the command",
"pid" => long process identifier,
"running" => bool true if the process is still running
"exitcode" => long exitcode if the process exited
"signaled" => bool true if the process was signaled
"termsig" => long signal number if signaled
"stopped" => bool true if the process is stopped
"stopsig" => long signal number if stopped
);

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- Move proc_open code to a source file of it's own.
- Tidy up that netware mess by performing a configure check which will
define the symbol PHP_CAN_SUPPORT_PROC_OPEN if PHP can support pro

- Move proc_open code to a source file of it's own.
- Tidy up that netware mess by performing a configure check which will
define the symbol PHP_CAN_SUPPORT_PROC_OPEN if PHP can support proc_open.
- Protected the proc_open specific code with #ifdef PHP_CAN_SUPPORT_PROC_OPEN
so that user-space scripts can use function_exists and react accordingly.

** Heads Up Win32: You need to add ext/standard/proc_open.c to the DSP and
** #define PHP_CAN_SUPPORT_PROC_OPEN in the w32 config header.

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