1. Add a boolean "negate" column to query.expression.

1. Add a boolean "negate" column to query.expression.

2. Remove the valid values 'xnbet' (for NOT BETWEEN), 'xnex' (for
NOT EXIST) and 'xnin' (for NOT IN) for the column query.expression.type.
We will represent those types with 'xbet', 'xnex', and 'xin',
respectively, combined with negate = TRUE.

3. Eliminate the updatable views defined for the valid values
removed above.

M    Open-ILS/src/sql/Pg/002.schema.config.sql
M    Open-ILS/src/sql/Pg/008.schema.query.sql
A    Open-ILS/src/sql/Pg/upgrade/0252.schema.query-negation.sql
M    Open-ILS/examples/fm_IDL.xml

git-svn-id: svn://svn.open-ils.org/ILS/trunk@16395 dcc99617-32d9-48b4-a31d-7c20da2025e4