arith_instrs.tab: Clean up bsl/bsr
arith_instrs.tab: Clean up bsl/bsr

Eliminate the all-purpose variable 'ires'. Replace it with several
variables used that are used for their specific purpose. Narrow
the scope of the variables.

Do this to improve readability. It is not expected that it should
any impact on performance.

getong/otp,bsmr-erlang/otp,ferd/otp,isvilen/otp,kvakvs/otp,emacsmirror/erlang,bernardd/otp,saleyn/otp,bsmr-erlang/otp,saleyn/otp,jj1bdx/otp,RoadRunnr/otp,bernardd/otp,RaimoNiskanen/otp,cobusc/otp,bernardd/otp,dgud/otp,dumbbell/otp,rlipscombe/otp,isvilen/otp,emacsmirror/erlang,getong/otp,bjorng/otp,RoadRunnr/otp,vladdu/otp,getong/otp,aboroska/otp,aboroska/otp,potatosalad/otp,bsmr-erlang/otp,RoadRunnr/otp,dgud/otp,fenollp/otp,emacsmirror/erlang,dumbbell/otp,g-andrade/otp,goertzenator/otp,saleyn/otp,RoadRunnr/otp,dumbbell/otp,uabboli/otp,mikpe/otp,kvakvs/otp,jj1bdx/otp,g-andrade/otp,g-andrade/otp,RoadRunnr/otp,potatosalad/otp,tuncer/otp,isvilen/otp,potatosalad/otp,jj1bdx/otp,erlang/otp,g-andrade/otp,erlang/otp,erlang/otp,vinoski/otp,bjorng/otp,tuncer/otp,dgud/otp,RaimoNiskanen/otp,dumbbell/otp,potatosalad/otp,potatosalad/otp,getong/otp,dgud/otp,RaimoNiskanen/otp,g-andrade/otp,electricimp/otp,isvilen/otp,dgud/otp,ferd/otp,uabboli/otp,ferd/otp,ferd/otp,dumbbell/otp,jj1bdx/otp,bsmr-erlang/otp,legoscia/otp,RaimoNiskanen/otp,bernardd/otp,tuncer/otp,lrascao/otp,cobusc/otp,erlang/otp,lrascao/otp,isvilen/otp,bernardd/otp,vinoski/otp,rlipscombe/otp,legoscia/otp,falkevik/otp,uabboli/otp,vinoski/otp,legoscia/otp,potatosalad/otp,lrascao/otp,cobusc/otp,uabboli/otp,jj1bdx/otp,uabboli/otp,RaimoNiskanen/otp,ferd/otp,legoscia/otp,fenollp/otp,legoscia/otp,aboroska/otp,getong/otp,cobusc/otp,dgud/otp,aboroska/otp,jj1bdx/otp,vinoski/otp,saleyn/otp,kvakvs/otp,electricimp/otp,saleyn/otp,jj1bdx/otp,cobusc/otp,mikpe/otp,rlipscombe/otp,ferd/otp,dgud/otp,mikpe/otp,falkevik/otp,legoscia/otp,falkevik/otp,falkevik/otp,ferd/otp,legoscia/otp,electricimp/otp,rlipscombe/otp,ferd/otp,rlipscombe/otp,fenollp/otp,goertzenator/otp,bernardd/otp,emacsmirror/erlang,rlipscombe/otp,bsmr-erlang/otp,aboroska/otp,uabboli/otp,vinoski/otp,saleyn/otp,jj1bdx/otp,rlipscombe/otp,electricimp/otp,cobusc/otp,bernardd/otp,getong/otp,bjorng/otp,legoscia/otp,aboroska/otp,getong/otp,erlang/otp,kvakvs/otp,vinoski/otp,bsmr-erlang/otp,goertzenator/otp,bjorng/otp,emacsmirror/erlang,RaimoNiskanen/otp,goertzenator/otp,potatosalad/otp,electricimp/otp,jj1bdx/otp,vladdu/otp,vladdu/otp,bjorng/otp,vinoski/otp,bjorng/otp,lrascao/otp,fenollp/otp,isvilen/otp,mikpe/otp,mikpe/otp,dgud/otp,dumbbell/otp,rlipscombe/otp,RoadRunnr/otp,goertzenator/otp,g-andrade/otp,potatosalad/otp,cobusc/otp,falkevik/otp,kvakvs/otp,goertzenator/otp,mikpe/otp,dumbbell/otp,mikpe/otp,RoadRunnr/otp,lrascao/otp,mikpe/otp,vladdu/otp,aboroska/otp,lrascao/otp,emacsmirror/erlang,rlipscombe/otp,bernardd/otp,saleyn/otp,potatosalad/otp,erlang/otp,emacsmirror/erlang,electricimp/otp,kvakvs/otp,dgud/otp,mikpe/otp,tuncer/otp,goertzenator/otp,vladdu/otp,fenollp/otp,g-andrade/otp,rlipscombe/otp,falkevik/otp,bjorng/otp,bsmr-erlang/otp,kvakvs/otp,dgud/otp,mikpe/otp,falkevik/otp,falkevik/otp,lrascao/otp,erlang/otp,bernardd/otp,vladdu/otp,vladdu/otp,uabboli/otp,kvakvs/otp,isvilen/otp,kvakvs/otp,electricimp/otp,vladdu/otp,bjorng/otp,dumbbell/otp,bsmr-erlang/otp,vladdu/otp,falkevik/otp,tuncer/otp,uabboli/otp,fenollp/otp,isvilen/otp,dumbbell/otp,RaimoNiskanen/otp,jj1bdx/otp,dumbbell/otp,getong/otp,isvilen/otp,electricimp/otp,tuncer/otp,lrascao/otp,fenollp/otp,electricimp/otp,g-andrade/otp,potatosalad/otp,erlang/otp,tuncer/otp,isvilen/otp,vinoski/otp,fenollp/otp,tuncer/otp,uabboli/otp,emacsmirror/erlang,tuncer/otp,goertzenator/otp,saleyn/otp,bsmr-erlang/otp,goertzenator/otp,bjorng/otp,getong/otp,ferd/otp,erlang/otp,legoscia/otp,RoadRunnr/otp,getong/otp,g-andrade/otp,fenollp/otp,cobusc/otp,vinoski/otp,emacsmirror/erlang,saleyn/otp,g-andrade/otp,lrascao/otp,bjorng/otp,vinoski/otp,RaimoNiskanen/otp,RaimoNiskanen/otp,RoadRunnr/otp,erlang/otp,aboroska/otp,aboroska/otp,emacsmirror/erlang