Log Message:
-----------
Fix skip (offset) when used with a join
Modified Files:
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Npgsql2/src/Npgsql/SqlGenerators:
SqlBaseGenerator.cs (r1.21 -> r1.22)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/SqlGenerators/SqlBaseGenerator.cs.diff?r1=1.21&r2=1.22)