In "intro until" and its applications, be consistent when reduction is used or not before trying to introduce.
In "intro until" and its applications, be consistent when reduction is
used or not before trying to introduce.

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@15175 85f007b7-540e-0410-9357-904b9bb8a0f7

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