pgsql: Add table name to VACUUM statement in matview.c.

Add table name to VACUUM statement in matview.c.

The test only needs the one table to be vacuumed.  Vacuuming the
database may affect other tests.

Per gripe from Tom Lane.  Back-patch to 9.3, where the test was
was added.

Branch
------
REL9_3_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/80811f94ebd7d47510e7c4aafc382babd3826d39

Modified Files
--------------
src/test/regress/expected/matview.out |    2 +-
src/test/regress/sql/matview.sql      |    2 +-
2 files changed, 2 insertions(+), 2 deletions(-)