TYPO3 Core

This adds a third parameter to the `config.cache` configuration. The
parameter is optional set to false by default.
Records from any subfolder are considered in the calculation of the
cache-lifetime by starttime/endtime.

The idea aims at pages with many nested sysfolders for records.
Specifying all the directories manually can be a lot of work.

Use it by adding a third parameter like in this example:
`config.cache.123 = tx_my_table:456:1`
to clear the cache on page 123 when a record found in page 456
or any nested subfolder reaches its starttime/endtime

This issue was automatically created from https://github.com/TYPO3/typo3/pull/348