small tutorial updates - installation, pooling, tbl struct cleanup
small tutorial updates - installation, pooling, tbl struct cleanup

saaros/plproxy-dev,markokr/plproxy-dev,markokr/plproxy-dev,myrkraverk/plproxy,saaros/plproxy-dev,petere/plproxy-dev,mpihlak/plproxy-dev,nad2000/plproxy