Fix to main.xsl to include only variables that have not already been included in the txsl
Fix to main.xsl to include only variables that have not already been included in the txsl

git-svn-id: 78af1e1b74da535b2dc32c108071d0d938ac4dca@160 24c30046-25e5-4eec-8353-25991c8b1332

opengeospatial/teamengine,opengeospatial/teamengine,opengeospatial/teamengine,opengeospatial/teamengine