<MYSQLHOME> - The path to the MySQL installation directory.
If not specified, setup script will ask for it when running.
Setup script will then search for MySQL executable file
at the following location: <MYSQLHOME> + "/bin/mysql".
<USERNAME> - the MySQL user name under which actiTIME will create and
use the database. If not specified, setup script will
ask for it when running.
<PASSWORD> - the password of user <USERNAME>. If not specified,
setup script will ask for it when running.
<HOST> - host name of the the server where MySQL server runs.
if not specified the local host is assumed.
Required if actiTIME has to use a remote MySQL database.
<PORT> - port on which MySQL server is running. If not specified
the default MySQL port will be used
<DBNAME> - the name of the database to be created. If not specified
'actiTIME' will be used as the database name.
NOTE: If the script finds the previous version of the actiTIME database then
it will back up the database to the actiTIME.mysql4.sql.backup_[current date] file.