Test allgather on Point and pair<Real,Point>
Test allgather on Point and pair<Real,Point>

This (when run with mpi via LIBMESH_RUN) should test one of the
failing cases in #631

I can't actually replicate the failure myself, however.

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