Made the nodal penalty method of determining displacement more generic and polished the code little bit.


git-svn-id: https://elmerfem.svn.sourceforge.net/svnroot/elmerfem/trunk@6004 35e42291-063b-0410-a9f9-998d8d6728aa
Made the internal extrusion more generic in that the direction may be chosen, as well as the min and max coordinate in the extruded direction.


git-svn-id: https://elmerfem.svn.sourceforge.net/svnroot/elmerfem/trunk@6005 35e42291-063b-0410-a9f9-998d8d6728aa