Add unit tests of new BoundaryInfo::build_side_list() API.
Add unit tests of new BoundaryInfo::build_side_list() API.

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