Changed array_subtract to array_diff

Adding fuctions array_unique, array_intersect and array_subtract.

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

\0 is part of they key, but not of the variable

- Allow all functions that receive user-defined function callbacks to accept
an array that contains an object and a method name, in place of a function
name, e.g. usort($array, array($obj

- Allow all functions that receive user-defined function callbacks to accept
an array that contains an object and a method name, in place of a function
name, e.g. usort($array, array($obj, "ObjSort"))
(I checked the code in array.c and basic_functions.c, other code which uses
call_user_function() may still force the function_name argument to be of type
IS_STRING, which prevents this feature from working - and is no longer necessary)

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@- Added third argument to in_array(). If it's true, then in_array()
@ will use strict comparison instead of the default one. (Andrei)

Fixes bug #4753

@- Added array_merge_recursive() that will recursively merge values
@ under the same keys. (Andrei)

@ Fixed min()/max() segfault. (Andrei)

Update the license with the new clause 6

(PHP array_multisort) Fix the array_size test.

Update for sort functions - user can now specify sort type.

@- Added array_rand() function. (Andrei)

Fix an empty arrays condition and optimize a bit.
@ Fixed a crash in array_multisort() that happened when empty arrays
@ were passed to it. (Andrei)

@- array_walk() now automatically resets the array. (Andrei)

Added natural comparison/sorting routines using code from Martin Pool.

@- Added natural comparison/sorting routines strnatcmp(), strnatcasecmp(),
@ natsort(), and natcasesort(). These a

Added natural comparison/sorting routines using code from Martin Pool.

@- Added natural comparison/sorting routines strnatcmp(), strnatcasecmp(),
@ natsort(), and natcasesort(). These are useful for comparing and sorting
@ strings that contain numbers. Based on the code from Martin Pool
@ <mbp@humbug.org.au>. See http://www.linuxcare.com.au/projects/natsort/
@ for more info on natural sorting. (Andrei)

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Return type was missing.

#yikes stripes, didn't see that one
#its time to go to bed
Re-fixed return value of min and max

1. Holy protos Batman.
2. Converted some functions from using "return" to RETURN_FALSE

@- Fixed extract() for EXTR_PREFIX_SAME and EXTR_SKIP cases. (Andrei)

@Cleaned up extension namespace (Stig)
Cleaned up extension namespace, and changed ext/standard into one single
extension.

@- Implemented default_charset and default_mimetype config directives (Stig)
Implemented default_charset and default_mimetype configuration directives.
Started implementing ticks in PHP.

There are more '|' and should be mixed.

Fix proto.

More protos.

the pipe is breaking all the time