Mac OS X permission errors in 4.0.18

[Tom Van Vleck]

Installing 4.0.18 on a Mac OS X 10.3.3 system
creates the "data" directory and its contents
as owned by "root" instead of "mysql."

I tried blowing away the data/mysql directory and
running scripts/mysql_install_db.  I tried logging
in as root and doing a recursive chown.  Finally
I deleted everything,
installed 4.0.17 instead and the tables had the right owners
and the database started OK.

Representative errors:
040317 12:43:56  mysqld started
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
040317 12:43:57  InnoDB: Setting file ./ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
040317 12:43:57  InnoDB: Log file ./ib_logfile0 did not exist: new to 
be created
InnoDB: Setting log file ./ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
040317 12:43:58  InnoDB: Log file ./ib_logfile1 did not exist: new to 
be created
InnoDB: Setting log file ./ib_logfile1 size to 5 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
040317 12:43:59  InnoDB: Started
040317 12:43:59  Fatal error: Can't open privilege tables: Can't find 
file: './mysql/host.frm' (errno: 13)
040317 12:43:59  Aborting

040317 12:43:59  InnoDB: Starting shutdown...
040317 12:44:01  InnoDB: Shutdown completed
040317 12:44:01  
/usr/local/mysql-standard-4.0.18-apple-darwin6.8-powerpc/bin/mysqld: 
Shutdown Complete

040317 12:44:01  mysqld ended