pgsql: Descriptor values were quoted twice.

Log Message:
-----------
Descriptor values were quoted twice.
Fixed some regression test problems.

Modified Files:
--------------
pgsql/src/interfaces/ecpg:
ChangeLog (r1.325 -> r1.326)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ChangeLog.diff?r1=1.325&r2=1.326)
pgsql/src/interfaces/ecpg/ecpglib:
execute.c (r1.59 -> r1.60)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/execute.c.diff?r1=1.59&r2=1.60)
pgsql/src/interfaces/ecpg/test/expected:
pgtypeslib-dt_test.c (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/pgtypeslib-dt_test.c.diff?r1=1.4&r2=1.5)
pgtypeslib-dt_test.stderr (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/pgtypeslib-dt_test.stderr.diff?r1=1.4&r2=1.5)
sql-desc.c (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/sql-desc.c.diff?r1=1.2&r2=1.3)
sql-desc.stderr (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/sql-desc.stderr.diff?r1=1.3&r2=1.4)
sql-desc.stdout (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/sql-desc.stdout.diff?r1=1.2&r2=1.3)
pgsql/src/interfaces/ecpg/test/pgtypeslib:
dt_test.pgc (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/pgtypeslib/dt_test.pgc.diff?r1=1.4&r2=1.5)
pgsql/src/interfaces/ecpg/test/sql:
desc.pgc (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/sql/desc.pgc.diff?r1=1.2&r2=1.3)