Thread: pgsql: Adjust safety restrictions for plperl functions.

Log Message:
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Adjust safety restrictions for plperl functions.  Andrew Dunstan's
patch, but allow srand and disallow sprintf as per subsequent discussion.

Modified Files:
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    pgsql/src/pl/plperl:
        plperl.c (r1.55 -> r1.56)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plperl/plperl.c.diff?r1=1.55&r2=1.56)