- Synced preproc.y with gram.y.

Michael Meskes <meskes@postgresql.org>

Commit: cfd184371e8948c9d856db124420354131440ef8
Author: Michael Meskes <meskes@postgresql.org>
Date: 2001-06-01T06:23:19Z
Releases: 7.2.1
        - Synced preproc.y with gram.y.
        - Synced pgc.l with scan.l.
        - Synced keyword.c.
        - Set ecpg version to 2.9.0.
        - Set library version to 3.3.0.

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