Log Message:
The dspam binary must be setuid to the dspam user, so we must list
the file in SPECIAL_PERMS to ensure that when installing from a binary
package, it is automatically set to the correct ownership and file
permissions.  Also manage ${DSPAM_HOME} using OWN_DIRS_PERMS since it
must exist for dspam to work properly, and must also be writable by
the dspam user.

Bump the PKGREVISION to 3.