Description:
------------
If I acqure a semaphore in one script, then it is not possible to 
release it in another script, even if I set "auto_release" to false.

As I have found out, it has something to do with the "count" attribute 
of the "sysvsem_sem"-structure. This value is really only needed by 
the 
"auto_release"-functionality, so it should be safe to ignore it in 
php_sysvsem_semop()-function.

The current cvs-version of sysvsem.c says on line 290:
if (!acquire && sem_ptr->count == 0)

I suggest to change it to:
if (!acquire && sem_ptr->count == 0 && sem_ptr->auto_release)






Reproduce code:
---------------
First script, acquire semaphore:

<?php

$sem_id = sem_get(2405, 1, 0666, false);
if ($sem_id !== false) if (sem_acquire($sem_id)) echo 'Sem acquired!';

?>

Second script, release semaphore:

<?php

$sem_id = sem_get(2405, 1, 0666, false);
if ($sem_id !== false) if (sem_release($sem_id)) echo 'Sem released!';

?>



Expected result:
----------------
The second script should run without errors/warnings and the semaphore 
should be released.

Actual result:
--------------
Warning: sem_release() [function.sem-release]: SysV semaphore 2 (key 
0x965) is not currently acquired