….h(75): error C2122: 'message': prototype parameter in name list illegal

INTERNAL_FUNCTION_PARAMETERS is defined in zend.h, but not included in
zend_exceptions.h (and it shouldn't). Expand the macro to fix the
compile issue.

We can avoid creating temporary strings, and then reparsing them into
numbers with zend_symtable_update() by using zend_hash_index_update()
directly.

For the following benchmark on an i7-4790:
```php
$file = str_repeat('A', 100000);
for ($i=0;$i<100;$i++) unpack('C*',$file);
```

I get:
```
Benchmark 1: ./sapi/cli/php y.php
  Time (mean ± σ):      85.8 ms ±   1.8 ms    [User: 74.5 ms, System: 10.4 ms]
  Range (min … max):    83.8 ms …  92.4 ms    33 runs

Benchmark 2: ./sapi/cli/php_old y.php
  Time (mean ± σ):     318.3 ms ±   2.7 ms    [User: 306.7 ms, System: 9.9 ms]
  Range (min … max):   314.9 ms … 321.6 ms    10 runs

Summary
  ./sapi/cli/php y.php ran
    3.71 ± 0.08 times faster than ./sapi/cli/php_old y.php
```

On an i7-1185G7 I get:
```
Benchmark 1: ./sapi/cli/php test.php
  Time (mean ± σ):      60.1 ms ±   0.7 ms    [User: 47.8 ms, System: 12.0 ms]
  Range (min … max):    59.2 ms …  63.8 ms    48 runs

  Warning: Statistical outliers were detected. Consider re-running this benchmark on a quiet system without any interferences from other programs. It might help to use the '--warmup' or '--prepare' options.

Benchmark 2: ./sapi/cli/php_old test.php
  Time (mean ± σ):     220.8 ms ±   2.2 ms    [User: 209.6 ms, System: 10.7 ms]
  Range (min … max):   218.5 ms … 224.5 ms    13 runs

Summary
  ./sapi/cli/php test.php  ran
    3.67 ± 0.06 times faster than ./sapi/cli/php_old test.php
```

If s is not NULL, the length can't be <= 0 because we at least append
`spkac` in the string, which is non-empty.
I noticed this condition because if it were actually possible to
execute, then it would leak memory.

They serve no purpose and are just confusing

And use char instead of widening to int for no reason

Since 2b38384 references are handled properly by the Zend API, so we
can simplify the callers by removing reference handling from there.

The strings we encounter are either interned in which case the
persistent bool doesn't matter; or they're temporary as the code already
assumes that anyway.
This patch shrinks the function from 3332 bytes to 3173 bytes on x86-64
with GCC 15.1.1.

Instead of using lookup tables, we can use a combination of shifts and
byte swapping to achieve the same thing in less cycles and with less
code.

Benchmark files
---------------

pack1.php:
```php
for ($i = 0; $i < 10_000_000; ++$i) {
    pack("J", 0x7FFFFFFFFFFFFFFF);
}
```

pack2.php:
```php
for ($i = 0; $i < 4000000; ++$i) {
    pack("nvc*", 0x1234, 0x5678, 65, 66);
}
```

On an i7-4790:
```
Benchmark 1: ./sapi/cli/php pack1.php
  Time (mean ± σ):     408.8 ms ±   3.4 ms    [User: 406.1 ms, System: 1.6 ms]
  Range (min … max):   403.6 ms … 413.6 ms    10 runs

Benchmark 2: ./sapi/cli/php_old pack1.php
  Time (mean ± σ):     451.7 ms ±   7.7 ms    [User: 448.5 ms, System: 2.0 ms]
  Range (min … max):   442.8 ms … 461.2 ms    10 runs

Summary
  ./sapi/cli/php pack1.php ran
    1.11 ± 0.02 times faster than ./sapi/cli/php_old pack1.php

Benchmark 1: ./sapi/cli/php pack2.php
  Time (mean ± σ):     239.3 ms ±   6.0 ms    [User: 236.2 ms, System: 2.3 ms]
  Range (min … max):   233.2 ms … 256.8 ms    12 runs

Benchmark 2: ./sapi/cli/php_old pack2.php
  Time (mean ± σ):     271.9 ms ±   3.3 ms    [User: 269.7 ms, System: 1.3 ms]
  Range (min … max):   267.4 ms … 279.0 ms    11 runs

Summary
  ./sapi/cli/php pack2.php ran
    1.14 ± 0.03 times faster than ./sapi/cli/php_old pack2.php
```

On an i7-1185G7:
```
Benchmark 1: ./sapi/cli/php pack1.php
  Time (mean ± σ):     263.7 ms ±   1.8 ms    [User: 262.6 ms, System: 0.9 ms]
  Range (min … max):   261.5 ms … 268.2 ms    11 runs

Benchmark 2: ./sapi/cli/php_old pack1.php
  Time (mean ± σ):     303.3 ms ±   6.5 ms    [User: 300.7 ms, System: 2.3 ms]
  Range (min … max):   297.4 ms … 318.1 ms    10 runs

Summary
  ./sapi/cli/php pack1.php ran
    1.15 ± 0.03 times faster than ./sapi/cli/php_old pack1.php

Benchmark 1: ./sapi/cli/php pack2.php
  Time (mean ± σ):     156.7 ms ±   2.9 ms    [User: 154.7 ms, System: 1.7 ms]
  Range (min … max):   151.6 ms … 164.7 ms    19 runs

Benchmark 2: ./sapi/cli/php_old pack2.php
  Time (mean ± σ):     174.6 ms ±   3.3 ms    [User: 171.9 ms, System: 2.3 ms]
  Range (min … max):   170.7 ms … 180.4 ms    17 runs

Summary
  ./sapi/cli/php pack2.php ran
    1.11 ± 0.03 times faster than ./sapi/cli/php_old pack2.php
```

Co-authored-by: divinity76@gmail.com