pgsql8 diffing fix: code refactoring for mysql5 needs done everywhere
bump package version to 1.3.2 for release
update stage file labels to be consistent with their content and recognize the difference between stage upgrade files and slony replica set stage upgrade files
bump DBSteward/master to 1.3.3 maintenance version
update README to match API 1.3 stage definitions inserted in stage upgrade files
update README to match API 1.3 stage definitions inserted in stage upgrade files
update README to match API 1.3 stage definitions inserted in stage upgrade files
fix data_row_overlay_key_search() callers to build the primary key index they pass for the correct context table primary key set --  this makes data_row_overlay_key_search() primary key matching correct and the base vs overlay reverser change in 1.3.0 can be reverted
1.3.3 changlog note: XML data row composite fix
data row diffing UPDATE + INSERT DML generation fix

in the case of table row data comparising for DIFFING, the primary keys to use are table B
but the table B and A columns are reversed as the comparison is B vs A not base vs overlay
so the columns to match as base and overlay are reversed, comared to other calls to data_row_overlay_primary_key_index()
data row diffing UPDATE + INSERT DML generation fix

in the case of table row data comparising for DIFFING, the primary keys to use are table B
but the table B and A columns are reversed compared to data_rows_overlay() as the comparison is B vs A not base vs overlay (AvB)
so the columns to match as base and overlay are reversed, comared to other calls to data_row_overlay_primary_key_index()