Bug 13019: [QA Follow-up] Rename new_from_dbic and few typos

Bug 13019: [QA Follow-up] Rename new_from_dbic and few typos

Since new_from_dbic is not meant as a public method, this patch adds
a prefix to the name of this internal routine. For the same reason I
removed it from t/Borrower.t.
Removed one use overload-line in Objects (not used).
Resolved a few typos.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>