Pair of send(vector) -> send(vector<pair>)
Pair of send(vector) -> send(vector<pair>)

This may be more efficient in some cases and it should be easier to
refactor shortly.

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