pgestraier - pgestraier: Created new function which allows users to

Log Message:
-----------
Created new function which allows users to specify attributes which should
be returned like this:

select * from pgest('/index/path', 'query', '@title ISTRINC foo', limit, offset, {'@id','@title','@size'}) as (id text, title text, size text);

Modified Files:
--------------
pgestraier:
test.sql (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgestraier/pgestraier/test.sql.diff?r1=1.7&r2=1.8)
pgest.sql (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgestraier/pgestraier/pgest.sql.diff?r1=1.4&r2=1.5)
pgest.c (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgestraier/pgestraier/pgest.c.diff?r1=1.10&r2=1.11)