pgsql: More cleaning up and removed some duplicates.

Log Message:
-----------
More cleaning up and removed some duplicates.

Modified Files:
--------------
pgsql/src/interfaces/ecpg:
ChangeLog (r1.352 -> r1.353)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ChangeLog?r1=1.352&r2=1.353)
pgsql/src/interfaces/ecpg/pgtypeslib:
dt.h (r1.37 -> r1.38)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/pgtypeslib/dt.h?r1=1.37&r2=1.38)
dt_common.c (r1.41 -> r1.42)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/pgtypeslib/dt_common.c?r1=1.41&r2=1.42)
interval.c (r1.36 -> r1.37)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/pgtypeslib/interval.c?r1=1.36&r2=1.37)
timestamp.c (r1.39 -> r1.40)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/pgtypeslib/timestamp.c?r1=1.39&r2=1.40)
pgsql/src/interfaces/ecpg/preproc:
Makefile (r1.127 -> r1.128)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/Makefile?r1=1.127&r2=1.128)
c_keywords.c (r1.20 -> r1.21)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/c_keywords.c?r1=1.20&r2=1.21)
ecpg_keywords.c (r1.35 -> r1.36)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/ecpg_keywords.c?r1=1.35&r2=1.36)
extern.h (r1.68 -> r1.69)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/extern.h?r1=1.68&r2=1.69)
keywords.c (r1.80 -> r1.81)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/keywords.c?r1=1.80&r2=1.81)
pgc.l (r1.153 -> r1.154)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/pgc.l?r1=1.153&r2=1.154)
preproc.y (r1.349 -> r1.350)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/preproc.y?r1=1.349&r2=1.350)
type.c (r1.73 -> r1.74)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/type.c?r1=1.73&r2=1.74)