More public manager methods
added some methods for BC.
Abstracting "new Builder" in Model

Implements: #3071
Merge branch '4.1' of github.com:laravel/framework into 4.1
Merge branch 'patch-1' of https://github.com/chrispitt/framework into chrispitt-patch-1
cleaning up some code.
Allow whereHas on belongsTo relations.
Updated change log.
Allows Seeder execution absent of a Command object
Fix indent
Merge pull request #3078 from daftspunk/patch-2

Allows Seeder execution absent of a Command object
Increment version.
Added Redirector tests.
Merge branch '4.1-managers' of https://github.com/GrahamCampbell/framework into GrahamCampbell-4.1-managers
cleaning up some code.