Add additional error checks
Fix a few typos and cleanup

Use 0 not maxint when 'none' is selected.

(if only they were implemented :-)

and lots of cleanup (hence the commit)
(ldapmodify will need much more work for transactions)

/false after the page result size (/true is still the default)

Active Directory (which returns no cookie but size in the last
paged results - this is permitted).