Log Message:
-----------
Fix logic error in tbm_intersect: the intersection of a normal page and
a lossy page has to be lossy, because we don't know exactly which tuples
on the page should remain part of the bitmap.  Per Jie Zhang.

Modified Files:
--------------
    pgsql/src/backend/nodes:
        tidbitmap.c (r1.4 -> r1.5)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/nodes/tidbitmap.c.diff?r1=1.4&r2=1.5)

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	Subject: bizgres - bizgres: Fixed an incorrect bitmap intersect operation in the