reworked InfFE::inverse_map. works now for infhex8 and infprism6 but still needs some more work to be used with other element types.
reworked InfFE::inverse_map. works now for
infhex8 and infprism6 but still needs some
more work to be used with other element types.


git-svn-id: ffc1bc5b3feaf8644044862cc38c386ade156493@250 434f946d-2f3d-0410-ba4c-cb9f52fb0dbf

certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh,certik/libmesh