* p/ticket/11157:
[ticket/11157] static public is the currently approved order.
[ticket/11157] Fix remaining captcha spam.
[ticket/11157] get_captcha_types is an instance method.
These changes should solve the strict standards error about accessing
the non-static get_instance() in a non-static way.
For that, I changed the get_instance methods to static methods.
PHPBB3-10575
References are not really needed in PHP due to copy-on-write. Since
PHP5, objects are always passed around as identifiers, which means they
are mutable. So it is no longer required to pass these by reference
either.
PHPBB3-9608
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
The autoloader is registered in install without caching, since caching is set
up during installation. This provides the same functionality, performance is
not a concern during installation anyway.
In common.php the autoloader is instantiated after the cache is initialised and
is started with the standard cache backend used for other cached values.
A few places in the code using class_exists had to be updated to explicitly
avoid autoloading, since they are used to check whether a file needs to be
included which does not (yet) follow the naming scheme the autoloader follows.
PHPBB3-9682
