* Added a 'STACK_SCHED_CODES' table to the database.
* Dropped the 'STACK_LINES.SCHED_CODES' field from the database.
* Incremented the database version to 308.
* Renamed the 'SchedCartList' class to 'RDSchedCartList' and
refactored it to be idiomatic Qt.
* Renamed the 'SchedRulesList' class to 'RDSchedRulesList'.
* Removed the 'Charset=' and 'Collation=' parameters from the
'[mySQL]' section of rd.conf(5).
* Removed support for the --mysql-charset=' and '--mysql-collation='
switches in rddbmgr(8).
* Refactored handling of character set and collation attributes
in rddbmgr(8) to treat them as immutable parts of the DB schema.
* Added a sanity check to rddbmgr(8) to prevent reverting from an
unknown schema.
* Added a sanity check to rddbmgr(8) to prevent inadvertent
reversion to an implied schema.
* Stubbed out rddbmgr(8).
* Implemented the '--create' command in rddbmgr(8).
* Fixed a bug in 'RDStation::create()' that generated corrupt records
in the 'AUDIO_INPUT' and 'AUDIO_OUTPUTS' tables when creating a
new host with no exemplar.