change copy constructor so that it doesn't segfault when other_mesh._partitioner==NULL
change copy constructor so that it doesn't segfault when other_mesh._partitioner==NULL

karpeev/libmesh,karpeev/libmesh,vikramvgarg/libmesh,capitalaslash/libmesh,jiangwen84/libmesh,BalticPinguin/libmesh,karpeev/libmesh,capitalaslash/libmesh,libMesh/libmesh,capitalaslash/libmesh,aeslaughter/libmesh,friedmud/libmesh,hrittich/libmesh,friedmud/libmesh,svallaghe/libmesh,dmcdougall/libmesh,permcody/libmesh,libMesh/libmesh,roystgnr/libmesh,dmcdougall/libmesh,dmcdougall/libmesh,jwpeterson/libmesh,balborian/libmesh,giorgiobornia/libmesh,pbauman/libmesh,Mbewu/libmesh,dknez/libmesh,90jrong/libmesh,permcody/libmesh,salazardetroya/libmesh,pbauman/libmesh,cahaynes/libmesh,salazardetroya/libmesh,90jrong/libmesh,BalticPinguin/libmesh,vikramvgarg/libmesh,jwpeterson/libmesh,karpeev/libmesh,libMesh/libmesh,dknez/libmesh,Mbewu/libmesh,vikramvgarg/libmesh,jwpeterson/libmesh,dschwen/libmesh,giorgiobornia/libmesh,svallaghe/libmesh,dknez/libmesh,benkirk/libmesh,friedmud/libmesh,svallaghe/libmesh,benkirk/libmesh,dschwen/libmesh,dschwen/libmesh,cahaynes/libmesh,markcmiller86/libmesh_silo,coreymbryant/libmesh,capitalaslash/libmesh,hrittich/libmesh,roystgnr/libmesh,Mbewu/libmesh,pbauman/libmesh,aeslaughter/libmesh,permcody/libmesh,markcmiller86/libmesh_silo,Mbewu/libmesh,BalticPinguin/libmesh,coreymbryant/libmesh,jiangwen84/libmesh,karpeev/libmesh,dmcdougall/libmesh,dschwen/libmesh,friedmud/libmesh,BalticPinguin/libmesh,libMesh/libmesh,balborian/libmesh,hrittich/libmesh,roystgnr/libmesh,pbauman/libmesh,salazardetroya/libmesh,giorgiobornia/libmesh,dschwen/libmesh,dmcdougall/libmesh,Mbewu/libmesh,hrittich/libmesh,roystgnr/libmesh,hrittich/libmesh,jwpeterson/libmesh,svallaghe/libmesh,BalticPinguin/libmesh,markcmiller86/libmesh_silo,aeslaughter/libmesh,balborian/libmesh,benkirk/libmesh,dknez/libmesh,90jrong/libmesh,Mbewu/libmesh,hrittich/libmesh,markcmiller86/libmesh_silo,90jrong/libmesh,friedmud/libmesh,vikramvgarg/libmesh,dschwen/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,benkirk/libmesh,aeslaughter/libmesh,libMesh/libmesh,giorgiobornia/libmesh,markcmiller86/libmesh_silo,coreymbryant/libmesh,giorgiobornia/libmesh,svallaghe/libmesh,salazardetroya/libmesh,jwpeterson/libmesh,svallaghe/libmesh,dknez/libmesh,svallaghe/libmesh,dschwen/libmesh,permcody/libmesh,90jrong/libmesh,friedmud/libmesh,vikramvgarg/libmesh,jwpeterson/libmesh,salazardetroya/libmesh,benkirk/libmesh,balborian/libmesh,coreymbryant/libmesh,svallaghe/libmesh,benkirk/libmesh,vikramvgarg/libmesh,dknez/libmesh,balborian/libmesh,jiangwen84/libmesh,90jrong/libmesh,markcmiller86/libmesh_silo,roystgnr/libmesh,hrittich/libmesh,permcody/libmesh,roystgnr/libmesh,benkirk/libmesh,friedmud/libmesh,friedmud/libmesh,salazardetroya/libmesh,pbauman/libmesh,pbauman/libmesh,hrittich/libmesh,markcmiller86/libmesh_silo,Mbewu/libmesh,aeslaughter/libmesh,aeslaughter/libmesh,cahaynes/libmesh,coreymbryant/libmesh,aeslaughter/libmesh,coreymbryant/libmesh,karpeev/libmesh,vikramvgarg/libmesh,dschwen/libmesh,libMesh/libmesh,salazardetroya/libmesh,balborian/libmesh,capitalaslash/libmesh,cahaynes/libmesh,balborian/libmesh,giorgiobornia/libmesh,libMesh/libmesh,roystgnr/libmesh,balborian/libmesh,jiangwen84/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,salazardetroya/libmesh,dmcdougall/libmesh,dmcdougall/libmesh,90jrong/libmesh,aeslaughter/libmesh,vikramvgarg/libmesh,vikramvgarg/libmesh,Mbewu/libmesh,libMesh/libmesh,cahaynes/libmesh,jiangwen84/libmesh,jiangwen84/libmesh,dknez/libmesh,capitalaslash/libmesh,pbauman/libmesh,cahaynes/libmesh,cahaynes/libmesh,hrittich/libmesh,giorgiobornia/libmesh,90jrong/libmesh,dmcdougall/libmesh,dknez/libmesh,Mbewu/libmesh,benkirk/libmesh,benkirk/libmesh,karpeev/libmesh,permcody/libmesh,BalticPinguin/libmesh,coreymbryant/libmesh,svallaghe/libmesh,balborian/libmesh,markcmiller86/libmesh_silo,jiangwen84/libmesh,permcody/libmesh,permcody/libmesh,aeslaughter/libmesh,capitalaslash/libmesh,pbauman/libmesh,jiangwen84/libmesh,karpeev/libmesh,cahaynes/libmesh,jwpeterson/libmesh,pbauman/libmesh,capitalaslash/libmesh,90jrong/libmesh,friedmud/libmesh,balborian/libmesh,giorgiobornia/libmesh,coreymbryant/libmesh,BalticPinguin/libmesh