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