Log Message:
-----------
Moved the calculations of whether to use an index scan to a seperate calculation instead of doing this while
constructingthe query. Also, moved allocation of strings and calculations of strings sizes to after the calculation.
Alsoimproved prediction of query size.
Modified Files:
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fd:
algutils.c (r1.13 -> r1.14)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/fulldisjunction/fd/algutils.c.diff?r1=1.13&r2=1.14)