some stride projector sharings optimizations...


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@6739 04224531-1f84-46d8-96ce-875b9e37dce3
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git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@6740 04224531-1f84-46d8-96ce-875b9e37dce3