Document the "-D" and "-T" options and the optional interval
and count or "zpool status".
Also for zpool's man page, use a consistent order for the
various "-T" options to match the program's help output.
Document the effect of additional "-D" options for zdb.
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#1786
2e2ddc30b4