Declare mutex only when threads are available
Declare mutex only when threads are available

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