Drop the never-used column item_count from acq.lineitem.

Drop the never-used column item_count from acq.lineitem.
Drop it also from the associated history table, and rebuild
the function that maintains it.  Finally, rebuild the
associated lifecycle view.

Apply to trunk only; this column never existed in 2.0.
The column has already been removed from the base installation
script.

M    Open-ILS/src/sql/Pg/002.schema.config.sql
A    Open-ILS/src/sql/Pg/upgrade/0417.schema.acq.drop-lineitem-item-count.sql

git-svn-id: svn://svn.open-ils.org/ILS/trunk@17918 dcc99617-32d9-48b4-a31d-7c20da2025e4