first shot on merging the core fro the int64 branch

ext/interbase support (incomplete)

Simplified and optimized ZEND_HANDLE_NUMERIC()

Introduced immutable arrays. They don't need to be copyed and may be used directly from SHM.

Use new zend_hash API

Use specialized functions instead of macros

Use optimized zend_array_dup() function. convert zend_hash_num_elements() and zend_hash_next_free_element() into macros.

Removed the old hack that was originally developed to support constants in array indeces, and isn't needed anymore after the Bob's patch.

Use new hash iteration API and avoid old zend_hash_update_current_key() hack

Port JSON

Avoid useless allocations

Reimplement strtr()

Fixed compilation warnings

Combine HashTable.flags and HashTable.nApplyCount into single 32-bit word

Use ZEND_HASH_FOEACH_* instead of zend_hash_apply_*

More ZEND_HASH_FOREACH_* related changes

Use ZEND_FETCH_FOREACH_* macros to iterate over HashTables instead of zend_hash_move_forward() and family.

Add only_integer_keys option to zend_hash_reindex

This allows to either do a full reindex, or only reindex the integer
keys.

Add zend_hash_splice

This implements the original functionality of php_splice, but
as an in-place operation, thus avoiding copying the HT.

This is much faster (~10x) if the spli

Add zend_hash_splice

This implements the original functionality of php_splice, but
as an in-place operation, thus avoiding copying the HT.

This is much faster (~10x) if the splice removes a small portion
of the array and doesn't insert many elements.

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Add zend_hash_reindex

The implementation differs from the original in array.c in that it
rehashes the hashtable in the same loop. This is approximately two
times faster (not counting

Add zend_hash_reindex

The implementation differs from the original in array.c in that it
rehashes the hashtable in the same loop. This is approximately two
times faster (not counting the rare case of a purely associative
array).

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Refactored zend_hash_* iteration API zend_hash_fove_forward_ex(ht, pos) and family require second argument to be real pointer.
&(ht)->nInternalPointer should be passed instead of NULL.
zend_h

Refactored zend_hash_* iteration API zend_hash_fove_forward_ex(ht, pos) and family require second argument to be real pointer.
&(ht)->nInternalPointer should be passed instead of NULL.
zend_hash_update_current_key() may work only with internal pointer.

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Cleanup

Typo

Fixed extract() support IS_INDIRECT

Refactored IS_INDIRECT usage for CV and object properties to support HashTable resizing