This replaces the deprecated and broken Blowfish implementation that has
previously been used and should provide a lot more security.

This new class is only losely based on our previous library. The
whole API was changed to make it more flexible and memory saving.

Some fisrt unit tests are included

The problem with using include is that when the file that is loaded
does not contain the plugin class (e.g. because the directory name is
wrong), the file could be loaded again when the plugin class is
requested a second time which will lead to a fatal error because of
class redeclaration.

This partially reverts de50cad6 as the
strict check breaks existing plugins and this shouldn't be changed
without prior discussion and a warning for plugin authors with some time
to adjust their plugins. Now all characters that are valid in PHP class
names except "_" are allowed.

This checks if plugin names are valid and only loads valid plugin files,
this could prevent some errors from wrong upgrades as described in
FS#2464.

This introduces a class for nicer wrapping and easier testing. Some
functions were changed to provide nicer APIs (no throwing around of
unescaped regexps) and to simplify things (hopefully).

The refactoring isn't completed yet, so this will break the subscription
system.

The goal is to move as much subscription related stuff to this class as
possible. Currently there is some code in lib/exe/indexer.php and maybe
elsewhere (common.php?). Additionally everything should be covered by
tests. A few tests are included here already.

This new wrapper ensures types are correct and accessed parameters are
actually set (with custom default fallbacks).

The wrapper is available in the global $INPUT variable. It accesses
$_REQUEST by default. If POST or GET is required, the post and get
members can be used:

$INPUT->int('foo',false); // access $_REQUEST['foo'], default false
$INPUT->post->int('foo'); // access $_POST['foo'], default 0
$INPUT->get->int('foo'); // access $_GET['foo'], default 0

The codebase still needs to be updated to make use of this.

When a plugin file exists, we can assume it is the correct file and load
it without error supression. This makes it much easier to detect and
debug problematic plugins.

this fixes the HTTP tests which do test the base class directly instead
of the DokuHTTPClient subclass

this splits the long auth_cryptPassword() function into many member
functions of a new class PassHash which should make it more
maintainable and reusable for other projects.

This also adds two new methods djangomd5 and djangosha1 as used by the
popular python framework Django.

Maybe the auth_cryptPassword() and auth_verifyPassword() functions
should be deprecated in favor of using the class directly?

This makes it possible to autoload the sitemapper when needed.

This patch adds an option to choose how filenames are encoded
when saved to the file system. You can choose between urlencoding
(url), the new SafeFn method (safe) and storing real UTF-8 (utf-8).

This patch moved the place where DOKU_PLUGIN is defined. It no longer
can be set from a normal config (only via preload)

those are loaded on demand through the autoloader mechanism

Also cliopts.php is not loaded automatically at all

Classes are loaded throug PHP5's class autoloader, all other
includes are just loaded by default. This skips a lot of
require_once calls.

Parser and Plugin stuff isn't handled by the class loader yet.