Replace overloads with template function.
Replace overloads with template function.

std::isnan can also take integral types.

90jrong/libmesh,roystgnr/libmesh,BalticPinguin/libmesh,libMesh/libmesh,pbauman/libmesh,90jrong/libmesh,dschwen/libmesh,BalticPinguin/libmesh,hrittich/libmesh,hrittich/libmesh,roystgnr/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,pbauman/libmesh,BalticPinguin/libmesh,pbauman/libmesh,hrittich/libmesh,libMesh/libmesh,capitalaslash/libmesh,90jrong/libmesh,libMesh/libmesh,dschwen/libmesh,capitalaslash/libmesh,pbauman/libmesh,libMesh/libmesh,hrittich/libmesh,roystgnr/libmesh,hrittich/libmesh,libMesh/libmesh,capitalaslash/libmesh,jwpeterson/libmesh,hrittich/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,libMesh/libmesh,hrittich/libmesh,90jrong/libmesh,roystgnr/libmesh,90jrong/libmesh,capitalaslash/libmesh,roystgnr/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,jwpeterson/libmesh,dschwen/libmesh,pbauman/libmesh,dschwen/libmesh,libMesh/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,pbauman/libmesh,90jrong/libmesh,dschwen/libmesh,dschwen/libmesh,libMesh/libmesh,90jrong/libmesh,roystgnr/libmesh,pbauman/libmesh,pbauman/libmesh,capitalaslash/libmesh,pbauman/libmesh,90jrong/libmesh,hrittich/libmesh,jwpeterson/libmesh,jwpeterson/libmesh,hrittich/libmesh,dschwen/libmesh,capitalaslash/libmesh,dschwen/libmesh,roystgnr/libmesh,roystgnr/libmesh,90jrong/libmesh