fix to SaveLine for a bug that made it skip most of the field variables


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7040 04224531-1f84-46d8-96ce-875b9e37dce3
resolve some nonlinear system convergence issues.


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7041 04224531-1f84-46d8-96ce-875b9e37dce3
change in postprocessing logic as suggested by Christian


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7042 04224531-1f84-46d8-96ce-875b9e37dce3