TYPO3 Core

Due to some heavy history on the caching framework, all
Database caches start with "cf_cache_", which is optimized
so they are only called e.g. "cache_pagesection" in the database tables.

In addition, the prefix "cache_" (in e.g. "cache_core") is unnecessary,
and also there due to legacy reasons, reading $this->getCache('cache_runtime')
seems very illogical.

Therefor the following caches have been renamed:
- cache_core => core
- cache_hash => hash
- cache_pages => pages
- cache_pagesection => pagesection
- cache_runtime => runtime
- cache_rootline => rootline
- cache_imagesizes => imagesizes

Old identifiers can still be called within PHP,
but the caching framework throws a deprecation message
on setting up such a cache.

Patch set 3 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/59661

Patch set 4 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/59661

Patch set 5 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/59661

Patch set 6 for branch master of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/59661