plot error to Nemesis in adaptivity_ex3
plot error to Nemesis in adaptivity_ex3

This gets me a little test coverage of the new feature, plus it's nice
when playing with adaptivity_ex3 benchmarking.

hrittich/libmesh,pbauman/libmesh,giorgiobornia/libmesh,dschwen/libmesh,pbauman/libmesh,hrittich/libmesh,libMesh/libmesh,pbauman/libmesh,capitalaslash/libmesh,90jrong/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,capitalaslash/libmesh,dschwen/libmesh,giorgiobornia/libmesh,capitalaslash/libmesh,capitalaslash/libmesh,dschwen/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,jwpeterson/libmesh,giorgiobornia/libmesh,90jrong/libmesh,libMesh/libmesh,hrittich/libmesh,capitalaslash/libmesh,90jrong/libmesh,pbauman/libmesh,jwpeterson/libmesh,90jrong/libmesh,jwpeterson/libmesh,libMesh/libmesh,libMesh/libmesh,capitalaslash/libmesh,jwpeterson/libmesh,hrittich/libmesh,roystgnr/libmesh,BalticPinguin/libmesh,libMesh/libmesh,hrittich/libmesh,dschwen/libmesh,roystgnr/libmesh,dschwen/libmesh,libMesh/libmesh,roystgnr/libmesh,pbauman/libmesh,jwpeterson/libmesh,hrittich/libmesh,jwpeterson/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,90jrong/libmesh,hrittich/libmesh,90jrong/libmesh,BalticPinguin/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,roystgnr/libmesh,pbauman/libmesh,roystgnr/libmesh,dschwen/libmesh,roystgnr/libmesh,giorgiobornia/libmesh,libMesh/libmesh,BalticPinguin/libmesh,capitalaslash/libmesh,dschwen/libmesh,jwpeterson/libmesh,hrittich/libmesh,dschwen/libmesh,giorgiobornia/libmesh,hrittich/libmesh,90jrong/libmesh,90jrong/libmesh,BalticPinguin/libmesh,giorgiobornia/libmesh,BalticPinguin/libmesh,pbauman/libmesh,pbauman/libmesh,libMesh/libmesh,roystgnr/libmesh,90jrong/libmesh,giorgiobornia/libmesh,pbauman/libmesh