credativ/informix_fdw REL0_5_2

Support PostgreSQL 12

on GitHub

Support PostgreSQL 12

Fix wrong spelling in internal usage of DBMONEY.
The Informix documentation states that DB_MONEY is the wrong name, instead DBMONEY without the underline is correct.

Fix handling of BIGSERIAL and variable length character types.
Since PostgreSQL 12 it is necessary to support short varlena headers again. We can't rely on 4 byte headers anymore (not sure if that was right from the beginning)
BIGSERIAL types are different from SERIAL8, which was an oversight in the original implementation.
See commit 9ca46de for more details.