Evarconv: exact_ise_stack looks to stack head before bodies or branches
Evarconv: exact_ise_stack looks to stack head before bodies or branches

the order of the inspection is a "random" choise but going back to the old
behavior makes the compilation of ssreflect/rat.v 5 times faster ...

herbelin/github-coq,asr/coq,maximedenes/coq,ppedrot/coq,Ptival/coq,shindere/coq,william-lawvere/coq,TOSPIO/coq,jpdeplaix/coq,william-lawvere/coq,Lionel-Rieg/coq,amintimany/coq,aspiwack/coq,ejgallego/coq,gares/coq,JasonGross/coq,letouzey/coq-wip,gmalecha/coq,ejgallego/coq,SkySkimmer/coq,ejgallego/coq,TheTypoMaster/coq,amintimany/coq,coq/coq,pirapira/coq2rust,silene/coq,Lionel-Rieg/coq,amintimany/coq,silene/coq,TheTypoMaster/coq,TOSPIO/coq,Ptival/coq,maximedenes/coq,coq/coq,TOSPIO/coq,aspiwack/coq,ejgallego/coq,SkySkimmer/coq,TheTypoMaster/coq,shindere/coq,ale-f/coq,gares/coq,herbelin/github-coq,silene/coq,ppedrot/coq,ale-f/coq,pirapira/coq2rust,letouzey/coq-wip,mattam82/coq,JasonGross/coq,Zimmi48/coq,Ptival/coq,letouzey/coq-wip,ppedrot/coq,8l/coq,Zimmi48/coq,Matafou/coq,Zimmi48/coq,mlasson/coq,maximedenes/coq,ale-f/coq,shindere/coq,jpdeplaix/coq,Zimmi48/coq,asr/coq,gmalecha/coq,JasonGross/coq,coq/coq,mlasson/coq,letouzey/coq-wip,mlasson/coq,william-lawvere/coq,8l/coq,Matafou/coq,asr/coq,barras/coq,mattam82/coq,maximedenes/coq,ppedrot/coq,gares/coq,ppedrot/coq,JasonGross/coq,barras/coq,mattam82/coq,jpdeplaix/coq,barras/coq,gares/coq,aspiwack/coq,SkySkimmer/coq,pirapira/coq2rust,maximedenes/coq,coq/coq,herbelin/github-coq,Lionel-Rieg/coq,gares/coq,Matafou/coq,SkySkimmer/coq,8l/coq,letouzey/coq-wip,gmalecha/coq