[ticket/9556] Drop php closing tags, add trailing newline

Closing tags converted using Oleg's script.
remove-php-end-tags.py -a .

Trailing newlines added using the following where $ext is file extension.
find . -type f -name "*.$ext" -print | xargs printf "e %s\nw\n" | ed -s;

Extensions: php, css, html, js, xml.

PHPBB3-9556

phpBB/develop/regex.php

@@ -80,5 +80,3 @@ echo 'www.URL: ' . $www_url . "<br />\n";
 // no schema and no authority
 $relative_url = "$segment$path_abempty(?:\?$query)?(?:\#$fragment)?";
 echo 'relative URL: ' . $relative_url . "<br />\n";
-
-?>