LOG_SCOPE in subsections of stitch_meshes()
LOG_SCOPE in subsections of stitch_meshes()

This seems to be a surprisingly heavyweight call, and the MOOSE test
of it is a frequent long-runtime offender, so let's keep a closer eye
on it.

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