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
Implemented skipping of fields for the data validation rules when baking a model
Merge pull request #2200 from ravage84/skip-validation-baking

Implemented skipping of fields for the data validation rules when baking.
Replaced all remaining license references to the Open Group Test Suite License with the MIT License
Changed .mo files from text to binary

Kudos to @ADmad
https://github.com/cakephp/cakephp/commit/ab2edbe4ddd78ad6fc9b9887d3a6c5d0259829e3#commitcomment-4555720
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 #2318 from ravage84/mo-files

Changed .mo files from text to binary
Merge pull request #2319 from ravage84/php-5-removal

Removed "PHP 5" from file header DocBlocks
Remove non-portable data type from MySQL.

'numeric' is a non-portable type that is not supported by any other
database driver. Removing it now will prevent future problems.
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