AUDIT: Add message types to audit records

This patch adds more messages types to the audit subsystem so that audit 
analysis is quicker, intuitive, and more useful.

Signed-off-by: Steve Grubb <sgrubb@redhat.com>
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I forgot one type in the big patch. I need to add one for user space 
originating SE Linux avc messages. This is used by dbus and nscd.

-Steve
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Updated to 2.6.12-rc4-mm1.
-dwmw2

Signed-off-by: David Woodhouse <dwmw2@infradead.org>