Thread: pgsql: Make plperl's $_TD trigger data a global rather than a lexical

Log Message:
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Make plperl's $_TD trigger data a global rather than a lexical variable,
with a fresh local value for each invocation, to avoid unexpected sharing
violations. Per recent -hackers discussion.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        plperl.sgml (r2.53 -> r2.54)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/plperl.sgml.diff?r1=2.53&r2=2.54)
    pgsql/src/pl/plperl:
        plperl.c (r1.109 -> r1.110)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/plperl/plperl.c.diff?r1=1.109&r2=1.110)