genop.tab: Add an OTP 20 comment
genop.tab: Add an OTP 20 comment

Make it clear that is_tagged_tuple/4 was added in OTP 20 (not R17).

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