added operator() to the tree.
added operator() to the tree.


git-svn-id: e88a1e38e13faf406e05cc89eca8dd613216f6c4@708 434f946d-2f3d-0410-ba4c-cb9f52fb0dbf

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