Fix compilation breakage.

[David Hampton]

Log Message:
-----------
Fix compilation breakage.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/src/backend/postgres:
        PostgresBackend.c
        PostgresBackend.h
        account.c
        book.c
        builder.c
        checkpoint.c
        escape.c
        events.c
        gncquery.c
        kvp-sql.c
        price.c
        putil.c
        txn.c
        txnmass.c
        upgrade.c
    gnucash/src/backend/postgres/test:
        test-db.c
    gnucash/src/engine:
        gnc-trace.h