Test nodes by location, not id
Test nodes by location, not id

Otherwise we get breakage when boundary elements and interior elements
are stored in different meshes and not sharing nodes.

dknez/libmesh,cahaynes/libmesh,vikramvgarg/libmesh,libMesh/libmesh,dmcdougall/libmesh,cahaynes/libmesh,benkirk/libmesh,balborian/libmesh,svallaghe/libmesh,jiangwen84/libmesh,coreymbryant/libmesh,jwpeterson/libmesh,pbauman/libmesh,capitalaslash/libmesh,balborian/libmesh,vikramvgarg/libmesh,benkirk/libmesh,BalticPinguin/libmesh,friedmud/libmesh,libMesh/libmesh,dmcdougall/libmesh,aeslaughter/libmesh,coreymbryant/libmesh,svallaghe/libmesh,permcody/libmesh,dmcdougall/libmesh,cahaynes/libmesh,giorgiobornia/libmesh,roystgnr/libmesh,90jrong/libmesh,balborian/libmesh,giorgiobornia/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,benkirk/libmesh,vikramvgarg/libmesh,permcody/libmesh,friedmud/libmesh,jiangwen84/libmesh,aeslaughter/libmesh,hrittich/libmesh,vikramvgarg/libmesh,dknez/libmesh,capitalaslash/libmesh,dmcdougall/libmesh,BalticPinguin/libmesh,90jrong/libmesh,pbauman/libmesh,jiangwen84/libmesh,balborian/libmesh,benkirk/libmesh,roystgnr/libmesh,aeslaughter/libmesh,friedmud/libmesh,roystgnr/libmesh,pbauman/libmesh,balborian/libmesh,balborian/libmesh,svallaghe/libmesh,libMesh/libmesh,90jrong/libmesh,90jrong/libmesh,libMesh/libmesh,capitalaslash/libmesh,BalticPinguin/libmesh,permcody/libmesh,benkirk/libmesh,cahaynes/libmesh,90jrong/libmesh,jiangwen84/libmesh,hrittich/libmesh,benkirk/libmesh,permcody/libmesh,giorgiobornia/libmesh,dschwen/libmesh,coreymbryant/libmesh,dschwen/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,libMesh/libmesh,jiangwen84/libmesh,giorgiobornia/libmesh,benkirk/libmesh,aeslaughter/libmesh,BalticPinguin/libmesh,hrittich/libmesh,coreymbryant/libmesh,dknez/libmesh,90jrong/libmesh,friedmud/libmesh,BalticPinguin/libmesh,svallaghe/libmesh,friedmud/libmesh,jwpeterson/libmesh,vikramvgarg/libmesh,dmcdougall/libmesh,friedmud/libmesh,jwpeterson/libmesh,jwpeterson/libmesh,capitalaslash/libmesh,balborian/libmesh,permcody/libmesh,giorgiobornia/libmesh,90jrong/libmesh,svallaghe/libmesh,permcody/libmesh,coreymbryant/libmesh,giorgiobornia/libmesh,permcody/libmesh,90jrong/libmesh,aeslaughter/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,dmcdougall/libmesh,jiangwen84/libmesh,balborian/libmesh,BalticPinguin/libmesh,svallaghe/libmesh,coreymbryant/libmesh,benkirk/libmesh,benkirk/libmesh,roystgnr/libmesh,cahaynes/libmesh,capitalaslash/libmesh,dknez/libmesh,balborian/libmesh,dmcdougall/libmesh,dschwen/libmesh,dschwen/libmesh,pbauman/libmesh,coreymbryant/libmesh,jwpeterson/libmesh,dschwen/libmesh,hrittich/libmesh,BalticPinguin/libmesh,dschwen/libmesh,roystgnr/libmesh,jwpeterson/libmesh,hrittich/libmesh,dschwen/libmesh,svallaghe/libmesh,friedmud/libmesh,jiangwen84/libmesh,jiangwen84/libmesh,pbauman/libmesh,aeslaughter/libmesh,libMesh/libmesh,cahaynes/libmesh,svallaghe/libmesh,vikramvgarg/libmesh,aeslaughter/libmesh,roystgnr/libmesh,svallaghe/libmesh,hrittich/libmesh,aeslaughter/libmesh,vikramvgarg/libmesh,hrittich/libmesh,libMesh/libmesh,capitalaslash/libmesh,dknez/libmesh,pbauman/libmesh,roystgnr/libmesh,dknez/libmesh,pbauman/libmesh,roystgnr/libmesh,friedmud/libmesh,capitalaslash/libmesh,friedmud/libmesh,hrittich/libmesh,capitalaslash/libmesh,coreymbryant/libmesh,vikramvgarg/libmesh,jwpeterson/libmesh,pbauman/libmesh,90jrong/libmesh,balborian/libmesh,permcody/libmesh,dknez/libmesh,vikramvgarg/libmesh,libMesh/libmesh,dschwen/libmesh,cahaynes/libmesh,dknez/libmesh,cahaynes/libmesh,pbauman/libmesh,dmcdougall/libmesh,hrittich/libmesh