pgsql: Temporarily modify tsearch regression tests to suppress notice

Log Message:
-----------
Temporarily modify tsearch regression tests to suppress notice that comes
out at erratic times, because it is creating a totally unacceptable level
of noise in our buildfarm results.  This patch can be reverted when and if
the code is fixed to not issue notices during cache reload events.

Modified Files:
--------------
    pgsql/src/backend/tsearch:
        thesaurus_sample.ths (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/tsearch/thesaurus_sample.ths?r1=1.1&r2=1.2)
    pgsql/src/test/regress/expected:
        tsdicts.out (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/tsdicts.out?r1=1.1&r2=1.2)