pgsql: Change \' to '', for SQL standards compliance.

Log Message:
-----------
Change \' to '', for SQL standards compliance. Backpatch to 7.3, 7.4,
and 8.0. Later releases already patched.

Tags:
----
REL8_0_STABLE

Modified Files:
--------------
pgsql/contrib/dbmirror:
DBMirror.pl (r1.10 -> r1.10.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/dbmirror/DBMirror.pl.diff?r1=1.10&r2=1.10.4.1)
pending.c (r1.20 -> r1.20.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/dbmirror/pending.c.diff?r1=1.20&r2=1.20.4.1)
pgsql/contrib/tsearch/expected:
tsearch.out (r1.9 -> r1.9.8.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch/expected/tsearch.out.diff?r1=1.9&r2=1.9.8.1)
pgsql/contrib/tsearch/sql:
tsearch.sql (r1.4 -> r1.4.10.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch/sql/tsearch.sql.diff?r1=1.4&r2=1.4.10.1)
pgsql/contrib/tsearch2/expected:
tsearch2.out (r1.11 -> r1.11.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/expected/tsearch2.out.diff?r1=1.11&r2=1.11.4.1)
pgsql/contrib/tsearch2/sql:
tsearch2.sql (r1.7 -> r1.7.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/sql/tsearch2.sql.diff?r1=1.7&r2=1.7.4.1)
pgsql/src/backend/utils/adt:
ruleutils.c (r1.188.4.4 -> r1.188.4.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/ruleutils.c.diff?r1=1.188.4.4&r2=1.188.4.5)
pgsql/src/bin/initdb:
initdb.c (r1.73.4.3 -> r1.73.4.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/initdb/initdb.c.diff?r1=1.73.4.3&r2=1.73.4.4)
pgsql/src/bin/pg_dump:
pg_dump.c (r1.400.4.6 -> r1.400.4.7)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c.diff?r1=1.400.4.6&r2=1.400.4.7)
pgsql/src/bin/psql:
large_obj.c (r1.35 -> r1.35.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/large_obj.c.diff?r1=1.35&r2=1.35.4.1)
pgsql/src/interfaces/ecpg/test:
test1.pgc (r1.32 -> r1.32.6.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/test1.pgc.diff?r1=1.32&r2=1.32.6.1)
pgsql/src/interfaces/libpq:
fe-exec.c (r1.166 -> r1.166.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-exec.c.diff?r1=1.166&r2=1.166.4.1)
pgsql/src/pl/plpgsql/src:
gram.y (r1.64.4.3 -> r1.64.4.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/gram.y.diff?r1=1.64.4.3&r2=1.64.4.4)
pgsql/src/tutorial:
funcs.source (r1.7 -> r1.7.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tutorial/funcs.source.diff?r1=1.7&r2=1.7.4.1)