Thread: pgsql: Make clearer how arguments and return values in pl/perl are

Log Message:
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Make clearer how arguments and return values in pl/perl are escaped. This is to clarify the situation that Theo
Schlossnaglerecently reported on -bugs. 

Modified Files:
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    pgsql/doc/src/sgml:
        plperl.sgml (r2.65 -> r2.66)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/plperl.sgml.diff?r1=2.65&r2=2.66)