* PHP-8.0:
  Fix #80384: limit read buffer size

* PHP-7.4:
  Fix #80384: limit read buffer size

In the case of a stream with no filters, php_stream_fill_read_buffer
only reads stream->chunk_size into the read buffer. If the stream has
filters attached, it could unnecessarily buffer a large amount of data.

With this change, php_stream_fill_read_buffer only proceeds until either
the requested size or stream->chunk_size is available in the read buffer.

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Closes GH-6444.

Port the main php_cli_server.inc to use ephemeral ports, thus
allowing CLI server tests to be parallelized.

A complication here is that we also need to give each test a
separate doc root, to avoid index.php files writing over each
other.

Closes GH-6375.

* PHP-7.4:
  Update UPGRADING
  Update UPGRADING
  Update NEWS & UPGRADING
  Do not decode cookie names anymore
  Fix bug #79601 (Wrong ciphertext/tag in AES-CCM encryption for a 12 bytes IV)

* PHP-7.3:
  Update UPGRADING
  Update NEWS & UPGRADING
  Do not decode cookie names anymore
  Fix bug #79601 (Wrong ciphertext/tag in AES-CCM encryption for a 12 bytes IV)

* PHP-7.2:
  Update NEWS & UPGRADING
  Do not decode cookie names anymore
  Fix bug #79601 (Wrong ciphertext/tag in AES-CCM encryption for a 12 bytes IV)

Closes GH-5958

When an input variable name contains a non matched open bracket, we not
only have to replace that with an underscore, but also all following
forbidden characters.