Use proper tolerances in more unit tests
Use proper tolerances in more unit tests

We still can't expect extended-precision accuracy from problems we've
set up with double-precision inputs.

BalticPinguin/libmesh,hrittich/libmesh,BalticPinguin/libmesh,hrittich/libmesh,jwpeterson/libmesh,libMesh/libmesh,dschwen/libmesh,libMesh/libmesh,hrittich/libmesh,roystgnr/libmesh,roystgnr/libmesh,roystgnr/libmesh,dschwen/libmesh,hrittich/libmesh,jwpeterson/libmesh,libMesh/libmesh,dschwen/libmesh,jwpeterson/libmesh,roystgnr/libmesh,libMesh/libmesh,capitalaslash/libmesh,libMesh/libmesh,libMesh/libmesh,roystgnr/libmesh,jwpeterson/libmesh,jwpeterson/libmesh,libMesh/libmesh,capitalaslash/libmesh,dschwen/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,libMesh/libmesh,dschwen/libmesh,capitalaslash/libmesh,roystgnr/libmesh,capitalaslash/libmesh,jwpeterson/libmesh,hrittich/libmesh,BalticPinguin/libmesh,hrittich/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,roystgnr/libmesh,dschwen/libmesh,dschwen/libmesh,BalticPinguin/libmesh,hrittich/libmesh,hrittich/libmesh,hrittich/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,dschwen/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,capitalaslash/libmesh