Fix a crash when file:change_time/2,3 are called with invalid dates
Fix a crash when file:change_time/2,3 are called with invalid dates

Calling file:change_time/2,3 with an invalid date tuple
(e.g file:change_time("file.txt", {undefined, undefined}))
will cause file_server_2 to crash.
error_logger will shutdown and the whole VM will stop.
Change behavior to validate given dates on system boundaries.
(i.e before issuing a server call).

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