Thread: pgsql: Add commentary about Cygwin's broken erand48, per report from

Log Message:
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Add commentary about Cygwin's broken erand48, per report from Andrew Dunstan.

Modified Files:
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    pgsql:
        configure (r1.650 -> r1.651)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure?r1=1.650&r2=1.651)
        configure.in (r1.606 -> r1.607)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure.in?r1=1.606&r2=1.607)
    pgsql/src/backend/optimizer/geqo:
        geqo_selection.c (r1.25 -> r1.26)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/geqo/geqo_selection.c?r1=1.25&r2=1.26)