make clean should not remove SKIP files
make clean should not remove SKIP files

Add new make target 'distclean' that removes
files created by configure.

SKIP files are created by configure for instance
if configured  --without-javac.  They should only
be removed if one has to reconfigure, otherwise
'make clean; make' breaks.

palas/otp,RaimoNiskanen/otp,isvilen/otp,ferd/otp,release-project/otp,Teino1978-Corp/otp,klarna/otp,yangchengjian/otp,yangchengjian/otp,legoscia/otp,schlagert/otp,lhslll/otp,VincentHHL/otp,Teino1978-Corp/erlang-otp,jinshana/otp,legoscia/otp,emile/otp,sdebnath/otp,platinumthinker/otp,sitexa/otp,stolen/otp,fenollp/otp,potatosalad/otp,erlang/otp,cnbin/otp,bsmr-erlang/otp,cobusc/otp,erlang/otp,dumbbell/otp,lightcyphers/otp,massemanet/otp,gjaldon/otp,mujiatong/otp,lianghaivv/otp,dgud/otp,mikpe/otp,hairyhum/otp,NOMORECOFFEE/otp,rlipscombe/otp,sammoth-wazoku/otp,entropiae/otp,hairyhum/otp,aboroska/otp,psyeugenic/otp,benoitc/otp-1,release-project/otp,RoadRunnr/otp,Teino1978-Corp/otp,uabboli/otp,msantos/otp,bsmr-erlang/otp,neeraj9/otp,lightcyphers/otp,schlagert/otp,kvakvs/otp,bernardd/otp,mikpe/otp,jinshana/otp,awetzel/otp,lianghaivv/otp,emile/otp,johanclaesson/otp,marquisthunder/otp,g-andrade/otp,psyeugenic/otp,lrascao/otp,msantos/otp,emile/otp,theom/otp,enikki/otp,neeraj9/otp,mujiatong/otp,dumbbell/otp,uabboli/otp,release-project/otp,ahmedshafeeq/otp,ferd/otp,enikki/otp,lightcyphers/otp,dumbbell/otp,GinjaNinja32/otp,sammoth-wazoku/otp,getong/otp,jinshana/otp,tuncer/otp,lucafavatella/otp,rlipscombe/otp,bjorng/otp,matwey/otp,entropiae/otp,entropiae/otp,emacsmirror/erlang,RJ/otp,lightcyphers/otp,stolen/otp,erlang/otp,bsmr-erlang/otp,sammoth-wazoku/otp,vladdu/otp,krishnakumar4a4/otp,lrascao/otp,psyeugenic/otp,lantti/otp,jemsbhai/otp,RJ/otp,RichMorin/otp,potatosalad/otp,NOMORECOFFEE/otp,jemsbhai/otp,sammoth-wazoku/otp,bugs-erlang-org/otp,matwey/otp,sammoth-wazoku/otp,yangchengjian/otp,beni55/otp,sdebnath/otp,getong/otp,bjorng/otp,johanclaesson/otp,dgud/otp,awetzel/otp,marquisthunder/otp,weisslj/otp,jinshana/otp,klarna/otp,johanclaesson/otp,uabboli/otp,RJ/otp,benoitc/otp-1,RJ/otp,paulcager/otp,palas/otp,platinumthinker/otp,electricimp/otp,ferd/otp,tuncer/otp,c-rack/otp,ferd/otp,lhslll/otp,mikpe/otp,paulcager/otp,Teino1978-Corp/erlang-otp,gjaldon/otp,c-rack/otp,haguenau/otp,kvakvs/otp,erlang/otp,ferd/otp,uabboli/otp,lhslll/otp,bugs-erlang-org/otp,benoitc/otp-1,bernardd/otp,tuncer/otp,aboroska/otp,mikpe/otp,Teino1978-Corp/erlang-otp,bjorng/otp,lucafavatella/otp,RJ/otp,RGafiyatullin/otp,matwey/otp,haguenau/otp,tuncer/otp,haguenau/otp,rlipscombe/otp,paulcager/otp,enikki/otp,jj1bdx/otp,paladim/otp,RaimoNiskanen/otp,jj1bdx/otp,VincentHHL/otp,palas/otp,VincentHHL/otp,paladim/otp,release-project/otp,lucafavatella/otp,NOMORECOFFEE/otp,erlang/otp,Teino1978-Corp/otp,neeraj9/otp,psyeugenic/otp,g-andrade/otp,vladdu/otp,aboroska/otp,schlagert/otp,ferd/otp,release-project/otp,lhslll/otp,entropiae/otp,rlipscombe/otp,bernardd/otp,falkevik/otp,c-rack/otp,awetzel/otp,dumbbell/otp,RJ/otp,isvilen/otp,dgud/otp,hairyhum/otp,cnbin/otp,jj1bdx/otp,matwey/otp,NOMORECOFFEE/otp,derek121/otp,tuncer/otp,emacsmirror/erlang,lantti/otp,lightcyphers/otp,hairyhum/otp,krishnakumar4a4/otp,massemanet/otp,neeraj9/otp,electricimp/otp,ader1990/otp,tuncer/otp,cobusc/otp,jj1bdx/otp,jamesruan/otp,getong/otp,g-andrade/otp,jamesruan/otp,sitexa/otp,tuncer/otp,Teino1978-Corp/otp,jinshana/otp,potatosalad/otp,kvakvs/otp,kvakvs/otp,gjaldon/otp,goertzenator/otp,bugs-erlang-org/otp,emacsmirror/erlang,RichMorin/otp,fenollp/otp,palas/otp,aboroska/otp,awetzel/otp,fenollp/otp,marquisthunder/otp,paulcager/otp,release-project/otp,getong/otp,emile/otp,krishnakumar4a4/otp,ader1990/otp,saleyn/otp,fenollp/otp,falkevik/otp,lightcyphers/otp,basho/otp,c-rack/otp,vladdu/otp,RJ/otp,emile/otp,sitexa/otp,VincentHHL/otp,lrascao/otp,jj1bdx/otp,entropiae/otp,vinoski/otp,lemenkov/otp,mikpe/otp,massemanet/otp,vinoski/otp,getong/otp,release-project/otp,NOMORECOFFEE/otp,entropiae/otp,msantos/otp,theom/otp,beni55/otp,derek121/otp,potatosalad/otp,emile/otp,Teino1978-Corp/erlang-otp,yangchengjian/otp,sdebnath/otp,palas/otp,beni55/otp,cobusc/otp,beni55/otp,potatosalad/otp,mujiatong/otp,dgud/otp,falkevik/otp,isvilen/otp,bugs-erlang-org/otp,paladim/otp,electricimp/otp,johanclaesson/otp,klarna/otp,saleyn/otp,NOMORECOFFEE/otp,isvilen/otp,vic/otp,bsmr-erlang/otp,marquisthunder/otp,emile/otp,lemenkov/otp,bsmr-erlang/otp,dgud/otp,vic/otp,dumbbell/otp,ahmedshafeeq/otp,saleyn/otp,johanclaesson/otp,ahmedshafeeq/otp,RGafiyatullin/otp,yangchengjian/otp,bugs-erlang-org/otp,bsmr-erlang/otp,Teino1978-Corp/erlang-otp,falkevik/otp,bsmr-erlang/otp,emacsmirror/erlang,emacsmirror/erlang,lrascao/otp,stolen/otp,sammoth-wazoku/otp,krishnakumar4a4/otp,g-andrade/otp,mikpe/otp,goertzenator/otp,sitexa/otp,basho/otp,legoscia/otp,isvilen/otp,dumbbell/otp,jj1bdx/otp,vinoski/otp,weisslj/otp,cnbin/otp,Teino1978-Corp/erlang-otp,dgud/otp,electricimp/otp,massemanet/otp,massemanet/otp,erlang/otp,lantti/otp,paladim/otp,vladdu/otp,lhslll/otp,marquisthunder/otp,RoadRunnr/otp,VincentHHL/otp,legoscia/otp,legoscia/otp,uabboli/otp,uabboli/otp,kvakvs/otp,cobusc/otp,basho/otp,vinoski/otp,derek121/otp,kvakvs/otp,haguenau/otp,lucafavatella/otp,entropiae/otp,g-andrade/otp,jamesruan/otp,fenollp/otp,matwey/otp,jj1bdx/otp,GinjaNinja32/otp,basho/otp,awetzel/otp,lrascao/otp,schlagert/otp,saleyn/otp,isvilen/otp,isvilen/otp,saleyn/otp,johanclaesson/otp,ahmedshafeeq/otp,vic/otp,neeraj9/otp,goertzenator/otp,johanclaesson/otp,vic/otp,dumbbell/otp,psyeugenic/otp,psyeugenic/otp,vinoski/otp,krishnakumar4a4/otp,ahmedshafeeq/otp,klarna/otp,hairyhum/otp,derek121/otp,msantos/otp,weisslj/otp,RoadRunnr/otp,RoadRunnr/otp,lantti/otp,lianghaivv/otp,neeraj9/otp,schlagert/otp,sitexa/otp,GinjaNinja32/otp,weisslj/otp,bugs-erlang-org/otp,emile/otp,stolen/otp,emacsmirror/erlang,cobusc/otp,potatosalad/otp,sitexa/otp,sammoth-wazoku/otp,goertzenator/otp,bjorng/otp,platinumthinker/otp,jamesruan/otp,fenollp/otp,RoadRunnr/otp,falkevik/otp,Teino1978-Corp/otp,platinumthinker/otp,cnbin/otp,RaimoNiskanen/otp,lemenkov/otp,RichMorin/otp,lrascao/otp,jinshana/otp,uabboli/otp,legoscia/otp,cobusc/otp,RaimoNiskanen/otp,mujiatong/otp,bjorng/otp,falkevik/otp,palas/otp,GinjaNinja32/otp,matwey/otp,awetzel/otp,paulcager/otp,jemsbhai/otp,jj1bdx/otp,riverrun/otp,Teino1978-Corp/erlang-otp,gjaldon/otp,riverrun/otp,getong/otp,vladdu/otp,marquisthunder/otp,benoitc/otp-1,rlipscombe/otp,bjorng/otp,RaimoNiskanen/otp,sammoth-wazoku/otp,paladim/otp,aboroska/otp,RGafiyatullin/otp,GinjaNinja32/otp,theom/otp,bernardd/otp,RichMorin/otp,enikki/otp,cobusc/otp,bernardd/otp,ader1990/otp,stolen/otp,lucafavatella/otp,RGafiyatullin/otp,lhslll/otp,basho/otp,potatosalad/otp,krishnakumar4a4/otp,awetzel/otp,haguenau/otp,RaimoNiskanen/otp,RichMorin/otp,sdebnath/otp,klarna/otp,stolen/otp,release-project/otp,getong/otp,marquisthunder/otp,Teino1978-Corp/otp,riverrun/otp,c-rack/otp,beni55/otp,palas/otp,theom/otp,lantti/otp,vinoski/otp,bjorng/otp,dumbbell/otp,weisslj/otp,basho/otp,paulcager/otp,electricimp/otp,psyeugenic/otp,massemanet/otp,dgud/otp,lantti/otp,massemanet/otp,weisslj/otp,kvakvs/otp,hairyhum/otp,riverrun/otp,weisslj/otp,matwey/otp,awetzel/otp,cnbin/otp,RoadRunnr/otp,sdebnath/otp,emacsmirror/erlang,vinoski/otp,jemsbhai/otp,vladdu/otp,fenollp/otp,dumbbell/otp,schlagert/otp,neeraj9/otp,NOMORECOFFEE/otp,ader1990/otp,lucafavatella/otp,sdebnath/otp,ferd/otp,riverrun/otp,jemsbhai/otp,msantos/otp,haguenau/otp,ader1990/otp,electricimp/otp,cobusc/otp,RaimoNiskanen/otp,VincentHHL/otp,bsmr-erlang/otp,msantos/otp,vinoski/otp,cnbin/otp,matwey/otp,g-andrade/otp,RGafiyatullin/otp,cnbin/otp,getong/otp,paladim/otp,goertzenator/otp,vic/otp,platinumthinker/otp,legoscia/otp,ahmedshafeeq/otp,derek121/otp,gjaldon/otp,emacsmirror/erlang,derek121/otp,erlang/otp,benoitc/otp-1,goertzenator/otp,schlagert/otp,jinshana/otp,jemsbhai/otp,GinjaNinja32/otp,hairyhum/otp,johanclaesson/otp,RichMorin/otp,isvilen/otp,ahmedshafeeq/otp,jemsbhai/otp,c-rack/otp,theom/otp,lianghaivv/otp,sdebnath/otp,bernardd/otp,RGafiyatullin/otp,ahmedshafeeq/otp,potatosalad/otp,enikki/otp,rlipscombe/otp,emacsmirror/erlang,neeraj9/otp,mujiatong/otp,lianghaivv/otp,psyeugenic/otp,lantti/otp,vic/otp,schlagert/otp,jj1bdx/otp,saleyn/otp,uabboli/otp,massemanet/otp,rlipscombe/otp,lemenkov/otp,vic/otp,benoitc/otp-1,g-andrade/otp,theom/otp,jj1bdx/otp,emile/otp,emacsmirror/erlang,theom/otp,haguenau/otp,benoitc/otp-1,riverrun/otp,g-andrade/otp,aboroska/otp,basho/otp,bernardd/otp,electricimp/otp,RichMorin/otp,getong/otp,release-project/otp,benoitc/otp-1,lrascao/otp,RoadRunnr/otp,fenollp/otp,lrascao/otp,dgud/otp,kvakvs/otp,potatosalad/otp,paulcager/otp,palas/otp,bjorng/otp,rlipscombe/otp,isvilen/otp,jamesruan/otp,VincentHHL/otp,weisslj/otp,lhslll/otp,cnbin/otp,erlang/otp,klarna/otp,riverrun/otp,RoadRunnr/otp,falkevik/otp,g-andrade/otp,ader1990/otp,RaimoNiskanen/otp,beni55/otp,kvakvs/otp,klarna/otp,lianghaivv/otp,gjaldon/otp,bjorng/otp,vladdu/otp,bsmr-erlang/otp,GinjaNinja32/otp,lhslll/otp,mujiatong/otp,enikki/otp,erlang/otp,paulcager/otp,mikpe/otp,VincentHHL/otp,ferd/otp,riverrun/otp,jamesruan/otp,sitexa/otp,bjorng/otp,lantti/otp,bugs-erlang-org/otp,haguenau/otp,lrascao/otp,stolen/otp,jemsbhai/otp,msantos/otp,goertzenator/otp,ader1990/otp,c-rack/otp,bernardd/otp,stolen/otp,weisslj/otp,lemenkov/otp,falkevik/otp,saleyn/otp,massemanet/otp,mikpe/otp,marquisthunder/otp,mujiatong/otp,RGafiyatullin/otp,enikki/otp,paladim/otp,beni55/otp,basho/otp,falkevik/otp,lemenkov/otp,platinumthinker/otp,RJ/otp,dgud/otp,klarna/otp,dgud/otp,derek121/otp,ader1990/otp,GinjaNinja32/otp,jamesruan/otp,matwey/otp,yangchengjian/otp,erlang/otp,yangchengjian/otp,lucafavatella/otp,krishnakumar4a4/otp,jinshana/otp,electricimp/otp,hairyhum/otp,RaimoNiskanen/otp,fenollp/otp,rlipscombe/otp,mikpe/otp,gjaldon/otp,derek121/otp,potatosalad/otp,tuncer/otp,mujiatong/otp,RoadRunnr/otp,lemenkov/otp,Teino1978-Corp/otp,g-andrade/otp,gjaldon/otp,vladdu/otp,lightcyphers/otp,vladdu/otp,legoscia/otp,c-rack/otp,NOMORECOFFEE/otp,sdebnath/otp,mikpe/otp,beni55/otp,bernardd/otp,uabboli/otp,msantos/otp,jamesruan/otp,tuncer/otp,ahmedshafeeq/otp,basho/otp,saleyn/otp,goertzenator/otp,ferd/otp,RichMorin/otp,goertzenator/otp,vic/otp,Teino1978-Corp/erlang-otp,saleyn/otp,krishnakumar4a4/otp,platinumthinker/otp,lightcyphers/otp,sitexa/otp,getong/otp,lianghaivv/otp,vinoski/otp,legoscia/otp,enikki/otp,isvilen/otp,vinoski/otp,lucafavatella/otp,lemenkov/otp,yangchengjian/otp,theom/otp,electricimp/otp,lianghaivv/otp,RGafiyatullin/otp,platinumthinker/otp,aboroska/otp,aboroska/otp,entropiae/otp,rlipscombe/otp,paladim/otp,aboroska/otp,Teino1978-Corp/otp,dumbbell/otp,bugs-erlang-org/otp