TYPO3 Core

mysqli needs db host and db port as separate parameters, but they were combined in one string "host" before. Splitting this up gives headaches with ipv6 notation. Solution is to introduce a new port setting in db, handled during bootstrap.

Bootstrap should still split "host" by ":" if no port is given and if first part looks like ipv4 address or domain name, but it shouldn't fail if host is an ipv6 address only. The split case should be deprecated, hinting for own port setting instead (port still defaulting in db class to 3306).