pgsql: Work around lack of NLS support in libpgport by making those

Log Message:
-----------
Work around lack of NLS support in libpgport by making those components
who use it scan the relevant source files for their own catalog. It
creates a bit of duplicate work for translators, but it gets the job done
for now.

Modified Files:
--------------
pgsql/src/backend:
nls.mk (r1.15 -> r1.16)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/nls.mk.diff?r1=1.15&r2=1.16)
pgsql/src/bin/initdb:
nls.mk (r1.15 -> r1.16)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/initdb/nls.mk.diff?r1=1.15&r2=1.16)
pgsql/src/bin/pg_config:
nls.mk (r1.11 -> r1.12)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_config/nls.mk.diff?r1=1.11&r2=1.12)
pgsql/src/bin/pg_ctl:
nls.mk (r1.13 -> r1.14)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_ctl/nls.mk.diff?r1=1.13&r2=1.14)
pgsql/src/bin/pg_dump:
nls.mk (r1.17 -> r1.18)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/nls.mk.diff?r1=1.17&r2=1.18)
pgsql/src/bin/psql:
nls.mk (r1.19 -> r1.20)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/nls.mk.diff?r1=1.19&r2=1.20)
pgsql/src/port:
dirmod.c (r1.32 -> r1.33)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/dirmod.c.diff?r1=1.32&r2=1.33)
exec.c (r1.32 -> r1.33)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/exec.c.diff?r1=1.32&r2=1.33)