pginstaller - pginst: Added pg_autovacuum, btree_gist, chkpass, dblink &

Log Message:
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Added pg_autovacuum, btree_gist, chkpass, dblink & dbsize contribs.

Modified Files:
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pginst/ca:
pginstca.c (r1.25 -> r1.26)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/ca/pginstca.c.diff?r1=1.25&r2=1.26)
pginst/wxs:
pginst.wxs (r1.40 -> r1.41)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pginstaller/pginst/wxs/pginst.wxs.diff?r1=1.40&r2=1.41)