Try to make same comments for constructors.

Conflicts:
	lib/Cake/I18n/L10n.php
Remove @return from docblock (for __construct && __destruct methods)
Remove duplicated reference for behaviors in ClassRegistry

The 2nd key in the registry was to support persistModel which has long
since been removed. With this registry key not being used it can be
removed with reasonable safety.

Fixes #2306
Fix incorrect CSRF token fields when using postLink()

Creating a postLink after creating a GET form would result in the
incorrect fields being generated.

Fixes #2308
Merge pull request #2305 from kimegede/docblock-construct-destruct-return-void

Docblock construct destruct remove @return
Replaced all remaining license references to the Open Group Test Suite License with the MIT License
Merge pull request #2317 from ravage84/replace-ogtsl

Replaced all remaining license references to the Open Group Test Suite L...
Removed "PHP 5" from file header DocBlocks

This statement does not serve a purpose anymore.
In a long forgotten world it indicated the main version number of PHP which the code in the file was compatible to.
http://pear.php.net/manual/en/standards.sample.php
But since PHP 5.1 and later this is only marginally true.
Thus I propose to remove it from CakePHP.
Fixed some copyright and license statements in the file header DocBlocks
Merge pull request #2320 from ravage84/copyright+license-fixes

Fixed some copyright and license statements in the file header DocBlocks
Merge pull request #2319 from ravage84/php-5-removal

Removed "PHP 5" from file header DocBlocks
Add 'metadata' to the uninflected list.

Fixes #2332
Add test for saveAssociated and expression objects.

Add a test for #1514. This issue was fixed during recent refactorings.

Closes #1514
Added link to three hash methods
Merge pull request #2338 from ravage84/hash-linked

Added link to three hash methods
Fix duplicated webroot path on HtmlHelper::meta('icon').
Merge pull request #2358 from mathop/2.4-html-meta-icon

Fix duplicated webroot path on HtmlHelper::meta('icon').
Leave db->cacheSources unaltered.

When a model uses cacheSources = false, it should not have side effects
on the datasource.

Fixes #2364
Only enable cacheSources if both the datasource + model agree on it.

This prevents models from flipping cacheSources on when the datasource
has it disabled already.

Refs #2364
Fix coding standards error.

Refs #2364