Update ext/standard parameter names

Closes GH-6214.

Update array parameter names for named parameters

* The array "subject" of a function gets called $array.

* Further parameters should be self-descriptive if used
as a named pa

Update array parameter names for named parameters

* The array "subject" of a function gets called $array.

* Further parameters should be self-descriptive if used
as a named parameter, and a full word, not an abbreviation.

* If there is a "bunch more arrays" variadic, it gets
called $arrays (because that's what was already there).

* A few functions have a variadic "a bunch more arrays,
and then a callable", and were already called $rest.
I left those as is and died a little inside.

* Any callable provided to an array function that acts
on the array is called $callback. (Nearly all were already,
I just fixed the one or two outliers.)

* array_multisort() is beyond help so I ran screaming.

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Make array_multisort() signature more variadic

The second and third arguments are not always the sort_order and
sort_flags -- they can also be in reverse order, or be arrays
altogeth

Make array_multisort() signature more variadic

The second and third arguments are not always the sort_order and
sort_flags -- they can also be in reverse order, or be arrays
altogether. Move them into the variadic parameter to avoid awkward
error messages.

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Rename standard array function parameters to $array

This is targeting 8.0.

`$arg` seems like a poor choice of a name,
especially if the function were to have arguments added.

Rename standard array function parameters to $array

This is targeting 8.0.

`$arg` seems like a poor choice of a name,
especially if the function were to have arguments added.

In many cases, the php.net documentation already has $array for these functions.
E.g. https://www.php.net/manual/en/function.array-intersect.php

I'd assume that since named arguments was added to 8.0 near the feature freeze,
PHP's maintainers had planned to make the names consistent
and gradually use the same name for docs and implementation.

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Convert CRLF line endings to LF

This patch simplifies line endings tracked in the Git repository and
syncs them to all include the LF style instead of the CRLF files.

Newline ch

Convert CRLF line endings to LF

This patch simplifies line endings tracked in the Git repository and
syncs them to all include the LF style instead of the CRLF files.

Newline characters:
- LF (\n) (*nix and Mac)
- CRLF (\r\n) (Windows)
- CR (\r) (old Mac, obsolete)

To see which line endings are in the index and in the working copy the
following command can be used:
`git ls-files --eol`

Git additionally provides `.gitattributes` file to specify if some files
need to have specific line endings on all platforms (either CRLF or LF).

Changed files shouldn't cause issues on modern Windows platforms because
also Git can do output conversion is core.autocrlf=true is set on
Windows and use CRLF newlines in all files in the working tree.

Unless CRLF files are tracked specifically, Git by default tracks all
files in the index using LF newlines.

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Use EXPECT instead of EXPECTF when possible

EXPECTF logic in run-tests.php is considerable, so let's avoid it.

Fix CRLF line-endings in tests

Also fix a single instance of CRLF in ibase_query.c.

Fix incorrect argument reflection info for array_multisort()

Implement variadic function syntax

As per RFC: https://wiki.php.net/rfc/variadics

- Added ReflectionParameter::canBePassedByValue().