Issue #2284103 by alexpott, fabpot, damiankloip, Xano, Xen, Berdir: Fixed Remove the request from the container.

Issue #2190643 by Berdir, amateescu, Xano, yched: Serializing the container is a very very bad idea, let's prevent it?.

Issue #2004282 by dawehner, smiletrl, amateescu, tim.plunkett: Injected dependencies and serialization hell .

Conflicts:

	core/lib/Drupal/Core/DependencyInjection/ContainerBuilder.php

Issue #1595146 by Niklas Fiekas, cosmicdreams, Rob Loach, effulgentsia: Added Load the HttpKernel from the DI Container.

Issue #1605324 by sun, Jose Reyero, alexpott, chx, Rob Loach | beejeebus: Configuration system cleanup and rearchitecture.

Revert "- Patch #1605324 by sun, Jose Reyero, alexpott, chx, Rob Loach, beejeebus: configuration system cleanup and rearchitecture."

This reverts commit 8df23c8a. Original commit
was missing some files. Trying again.

- Patch #1605324 by sun, Jose Reyero, alexpott, chx, Rob Loach, beejeebus: configuration system cleanup and rearchitecture.

Issue #1512308 by August1914, Rob Loach, cosmicdreams: Replace $language_content() with Dependency Injection.

- Patch #1552744 by Rob Loach, effulgentsia, sun: Fixed Bootstrap for the Dependency Injection Container and make sure SimpleTest abides to it.