TYPO3 Core

As the title says, allowing this fallback presents an extremely easy way to make a runtime-only cache by any identifier, even a request-specific identifier - and would allow Extbase's ObjectManager to create classes without a TYPO3 context.

This then in turn allows things like creating a working instance of the TYPO3 Fluid RenderingContext which is necessary for assistant command line utilities like the schema generator.

The change would be fairly non-destructive as there already is a "hasCache()" method that still returns false (until the cache is automatically created upon access).