Write case file with iostreams.
Write case file with iostreams.

Note: We temporarily enable writing of QUAD9 elements in order to test
this example with systems_of_equations_ex3.

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