Thread: pgsql: Tweak dynahash.c to not allocate so many entries at once when

Log Message:
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Tweak dynahash.c to not allocate so many entries at once when dealing
with a table that has a small predicted size.  Avoids wasting several
hundred K on the timezone hash table, which is likely to have only one
or a few entries, but the entries use up 10Kb apiece ...

Modified Files:
--------------
    pgsql/src/backend/utils/hash:
        dynahash.c (r1.62 -> r1.63)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/hash/dynahash.c.diff?r1=1.62&r2=1.63)
    pgsql/src/include/utils:
        hsearch.h (r1.38 -> r1.39)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/hsearch.h.diff?r1=1.38&r2=1.39)
    pgsql/src/timezone:
        pgtz.c (r1.35 -> r1.36)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/timezone/pgtz.c.diff?r1=1.35&r2=1.36)