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:
----
REL7_4_STABLE

Modified Files:
--------------
pgsql/contrib/dbmirror:
DBMirror.pl (r1.6 -> r1.6.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/dbmirror/DBMirror.pl.diff?r1=1.6&r2=1.6.4.1)
pending.c (r1.14 -> r1.14.2.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/dbmirror/pending.c.diff?r1=1.14&r2=1.14.2.1)
pgsql/contrib/earthdistance:
earthdistance.sql.in (r1.8 -> r1.8.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/earthdistance/earthdistance.sql.in.diff?r1=1.8&r2=1.8.4.1)
pgsql/contrib/tsearch/expected:
tsearch.out (r1.9 -> r1.9.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch/expected/tsearch.out.diff?r1=1.9&r2=1.9.4.1)
pgsql/contrib/tsearch/sql:
tsearch.sql (r1.4 -> r1.4.6.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch/sql/tsearch.sql.diff?r1=1.4&r2=1.4.6.1)
pgsql/contrib/tsearch2/expected:
tsearch2.out (r1.6.2.1 -> r1.6.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/expected/tsearch2.out.diff?r1=1.6.2.1&r2=1.6.2.2)
pgsql/contrib/tsearch2/sql:
tsearch2.sql (r1.3.2.1 -> r1.3.2.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/tsearch2/sql/tsearch2.sql.diff?r1=1.3.2.1&r2=1.3.2.2)
pgsql/src/backend/utils/adt:
ruleutils.c (r1.157.2.4 -> r1.157.2.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/ruleutils.c.diff?r1=1.157.2.4&r2=1.157.2.5)
pgsql/src/bin/pg_dump:
pg_dump.c (r1.355.2.7 -> r1.355.2.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/pg_dump.c.diff?r1=1.355.2.7&r2=1.355.2.8)
pgsql/src/bin/psql:
large_obj.c (r1.29 -> r1.29.4.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/large_obj.c.diff?r1=1.29&r2=1.29.4.1)
pgsql/src/interfaces/ecpg/test:
test1.pgc (r1.32 -> r1.32.2.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/test1.pgc.diff?r1=1.32&r2=1.32.2.1)
pgsql/src/interfaces/jdbc/org/postgresql/jdbc1:
AbstractJdbc1Statement.java (r1.41.2.8 -> r1.41.2.9)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java.diff?r1=1.41.2.8&r2=1.41.2.9)
pgsql/src/interfaces/libpq:
fe-exec.c (r1.153.2.4 -> r1.153.2.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/fe-exec.c.diff?r1=1.153.2.4&r2=1.153.2.5)
pgsql/src/pl/plpgsql/src:
gram.y (r1.48.2.3 -> r1.48.2.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpgsql/src/gram.y.diff?r1=1.48.2.3&r2=1.48.2.4)
pgsql/src/tutorial:
funcs.source (r1.6 -> r1.6.2.1)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tutorial/funcs.source.diff?r1=1.6&r2=1.6.2.1)