Get rid of AiCount completely

Step 4:
Move to a 7-bit counter (not fully implemented yet)

Step 2:
Rename is_ref to EA

Step 1 in nuking the garbage collector:
- Change the hash destructor to return int
- Don't kill the bucket on hash_destroy if the destructor returns 0

Support definition of classes that are derived from classes that are defined in runtime

Fix Thies's bug report

* Fix concatenation of arrays (it was PHP 3.0 style, copying zval's instead
of zval *, and it wasn't using reference counting)
* Fix a memory leak in static array()'s with textual indices

E_ERROR -> E_COMPILE_ERROR in the compiler

Two fixes:
* The error generated by a failed class inheritence wasn't properly
displaying the file in which he error occured.
* Inheritence didn't work if the parent class had uppercas

Two fixes:
* The error generated by a failed class inheritence wasn't properly
displaying the file in which he error occured.
* Inheritence didn't work if the parent class had uppercase letters in it.

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- Fix the static array() initializing

* Fix a by-name call/method call bug
* Clean and optimize the whole function call process

Work around a compiler bug - mark variables that are sent to functions that aren't yet
defined as FETCH_W (because they might end up being sent by reference)

* Centralized shutdown
* Change shutdown order again

Call the request_shutdown on modules before destroying symbol tables, so that
the session module can be implemented

- Fixed Karl's bug report. It's not really a thorough fix, we really need to rethink the INIT_FCALL/DO_FCALL issue.
- Fixed numerous AiCount problems

New $GLOBALS init

Fixes

* Support getThis() for internal functions.
* Fix 'new object or die' and AiCount issue thoroughly (earlier fix didn't
work with the optimizer).
* Add new macros for standardized defini

* Support getThis() for internal functions.
* Fix 'new object or die' and AiCount issue thoroughly (earlier fix didn't
work with the optimizer).
* Add new macros for standardized definition of classes.
* Only report AiCount problems if shutdown was not silent.

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* Add struct name to all typedef's so that they can be debugged with MSVC
* Fix an AiCount bug - list(...) = $var was using $var multiple times, and thus
causing AiCount to be decreased multi

* Add struct name to all typedef's so that they can be debugged with MSVC
* Fix an AiCount bug - list(...) = $var was using $var multiple times, and thus
causing AiCount to be decreased multiple times even though it was increased only
once for $var. Mark all FETCH_DIM's so that they won't decrease AiCount, and only
decrease AiCount on the last FETCH_DIM.
* Fix a stupid bug - forgot to pass CLS_C to some compiler function. For some reason
MSVC doesn't report these :I

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Avoid leaking fd's in case of failures

- Updates we did today

- Fix a small problem with class decelerations.

* Fix all hash checks that checked Bucket.arKey for NULL, when it was changed
to char[1], these checks should have been changed to Bucket.nKeyLength==0
* Support runtime declaration of func

* Fix all hash checks that checked Bucket.arKey for NULL, when it was changed
to char[1], these checks should have been changed to Bucket.nKeyLength==0
* Support runtime declaration of functions. I ended up changing the grammar
to catch top level functions vs. nested functions. The reason is simple -
if we don't have functions properly declared at compile-time, function calls
cannot be resolved at compile time, and have to be resolved at runtime, which
ends up being much much slower (without the optimizer, that is).
It's no biggy though, the grammar change isn't that bad.

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* Fix a bug that occured in case of parse errors. We need to restore the lexical state
even if the compilation failed.

* Fix a problem with constant quoted strings, that was causing Thies's problem
* Remove a development-time printf