Adjust our libmesh build script
Adjust our libmesh build script

Modified build script to use MOOSE_JOBS instead of JOBS. Added some logic to handle the case where neither are set. References #2548

raghavaggarwal/moose,WilkAndy/moose,lindsayad/moose,jinmm1992/moose,liuwenf/moose,tonkmr/moose,lindsayad/moose,wgapl/moose,cpritam/moose,yipenggao/moose,katyhuff/moose,nuclear-wizard/moose,harterj/moose,laagesen/moose,liuwenf/moose,capitalaslash/moose,SudiptaBiswas/moose,adamLange/moose,shanestafford/moose,andrsd/moose,idaholab/moose,tonkmr/moose,harterj/moose,jinmm1992/moose,kasra83/moose,xy515258/moose,wgapl/moose,xy515258/moose,nuclear-wizard/moose,shanestafford/moose,WilkAndy/moose,stimpsonsg/moose,tonkmr/moose,giopastor/moose,backmari/moose,liuwenf/moose,capitalaslash/moose,sapitts/moose,raghavaggarwal/moose,bwspenc/moose,apc-llc/moose,Chuban/moose,joshua-cogliati-inl/moose,permcody/moose,nuclear-wizard/moose,raghavaggarwal/moose,dschwen/moose,harterj/moose,idaholab/moose,jessecarterMOOSE/moose,dschwen/moose,jiangwen84/moose,zzyfisherman/moose,WilkAndy/moose,SudiptaBiswas/moose,sapitts/moose,tonkmr/moose,dschwen/moose,zzyfisherman/moose,danielru/moose,roystgnr/moose,mellis13/moose,shanestafford/moose,zzyfisherman/moose,stimpsonsg/moose,sapitts/moose,idaholab/moose,capitalaslash/moose,bwspenc/moose,permcody/moose,yipenggao/moose,lindsayad/moose,yipenggao/moose,tonkmr/moose,zzyfisherman/moose,Chuban/moose,andrsd/moose,friedmud/moose,permcody/moose,Chuban/moose,liuwenf/moose,idaholab/moose,jhbradley/moose,waxmanr/moose,jbair34/moose,SudiptaBiswas/moose,jiangwen84/moose,friedmud/moose,backmari/moose,dschwen/moose,zzyfisherman/moose,YaqiWang/moose,andrsd/moose,lindsayad/moose,dschwen/moose,YaqiWang/moose,WilkAndy/moose,roystgnr/moose,YaqiWang/moose,tonkmr/moose,markr622/moose,jasondhales/moose,xy515258/moose,kasra83/moose,backmari/moose,mellis13/moose,jessecarterMOOSE/moose,andrsd/moose,stimpsonsg/moose,milljm/moose,roystgnr/moose,jhbradley/moose,bwspenc/moose,joshua-cogliati-inl/moose,markr622/moose,adamLange/moose,katyhuff/moose,sapitts/moose,Chuban/moose,adamLange/moose,jasondhales/moose,jessecarterMOOSE/moose,cpritam/moose,jiangwen84/moose,markr622/moose,SudiptaBiswas/moose,lindsayad/moose,danielru/moose,katyhuff/moose,waxmanr/moose,cpritam/moose,roystgnr/moose,laagesen/moose,xy515258/moose,apc-llc/moose,laagesen/moose,apc-llc/moose,laagesen/moose,YaqiWang/moose,jbair34/moose,jbair34/moose,liuwenf/moose,cpritam/moose,giopastor/moose,cpritam/moose,kasra83/moose,danielru/moose,giopastor/moose,jessecarterMOOSE/moose,jiangwen84/moose,stimpsonsg/moose,capitalaslash/moose,nuclear-wizard/moose,jasondhales/moose,waxmanr/moose,raghavaggarwal/moose,jasondhales/moose,laagesen/moose,yipenggao/moose,zzyfisherman/moose,jinmm1992/moose,cpritam/moose,WilkAndy/moose,jinmm1992/moose,mellis13/moose,jhbradley/moose,andrsd/moose,jbair34/moose,bwspenc/moose,milljm/moose,permcody/moose,milljm/moose,liuwenf/moose,roystgnr/moose,roystgnr/moose,milljm/moose,kasra83/moose,harterj/moose,markr622/moose,waxmanr/moose,bwspenc/moose,SudiptaBiswas/moose,katyhuff/moose,backmari/moose,shanestafford/moose,idaholab/moose,sapitts/moose,shanestafford/moose,friedmud/moose,harterj/moose,joshua-cogliati-inl/moose,wgapl/moose,shanestafford/moose,mellis13/moose,jhbradley/moose,joshua-cogliati-inl/moose,adamLange/moose,danielru/moose,wgapl/moose,giopastor/moose,apc-llc/moose,roystgnr/moose,WilkAndy/moose,milljm/moose,friedmud/moose,jessecarterMOOSE/moose