Fix the %b flags string for ddb. All bits above the 5th

Fix the %b flags string for ddb.  All bits above the 5th
(TF_OPENED_CONS) were broken in r188147 by adding TF_OPENED_CONS
without updating the string.  It was especially confusing to display
OPENED_CONS as GONE and BYPASS as ZOMBIE.  2 flags at the end were
not updated in r188487.

Don't print an extra 0x prefix for %p in a ddb command.  In the rest
of the kernel there are more than 6000 lines with %p and only about
40 with this bug.

Print a non-extra 0x prefix for %b in a ddb command.  In the rest
of the kernel, there are approx. 180 lines with %b and 2/3 of them
have this bug.

Submitted by:	bde
MFC after:	2 weeks