Thread: pgsql: Insert a hack in pl/tcl to disable Tcl's built-in Notifier

Log Message:
-----------
Insert a hack in pl/tcl to disable Tcl's built-in Notifier subsystem, which
has a bad habit of launching multiple threads within the backend and thereby
causing all kinds of havoc.  Fortunately, we don't need it, and recent Tcl
versions provide an easy way to disable it.  Diagnosis and fix by
Steve Marshall, Paul Bayer, and Doug Knight of WSI Corporation.

Modified Files:
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    pgsql/src/pl/tcl:
        pltcl.c (r1.112 -> r1.113)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/pl/tcl/pltcl.c?r1=1.112&r2=1.113)