Moving Cake\Error\Exception to Cake\Core\Error
Move Utility/Debugger to Error/Debugger.
Update namespace for Debugger class.
Cleanup AuthComponent and Authorize classes.

mapActions(), action() methods were removed from BaseAuthorized. They should be
added to appropriate class in Acl plugin. BaseAuthorized::controller() has been
removed. ControllerAuthorize::controller() provides the required getter/setter.
Move Security.salt value check to WeakPasswordHasher.
Update / fix test cases.
Add temporary class alias for Debugger.
Merge pull request #4430 from cakephp/3.0-move-debugger

3.0 move debugger
move Configure namespace to Core\Configure
add class alias for engines
Merge pull request #4432 from antograssiot/3.0-move-configure

3.0 move Configure namespace to Core\Configure
fixing some failing tests
Merge remote-tracking branch 'origin/3.0' into 3.0-move-exception

Conflicts:
	src/Cache/CacheRegistry.php
	src/Core/Configure.php
Fixing the rest of the failing tests
Improving docblock
Merge pull request #4424 from ADmad/3.0-auth-mapactions

Cleanup AuthComponent and Authorize classes.
Core\Error -> Core\Exception
Merge remote-tracking branch 'origin/3.0' into 3.0-move-exception

Conflicts:
	src/Auth/BaseAuthorize.php
	src/Auth/ControllerAuthorize.php
	src/Controller/Component/AuthComponent.php
Merge pull request #4433 from cakephp/3.0-move-exception

3.0 move exception
Merge branch '3.0' of https://github.com/cakephp/cakephp into documentationFixes