Fixing bug 2129 (evar introduced to remember an ambiguous projection had wrong type). At least two problems remain: - projection involving evar should check the type are compatible, - instances of filtered evars should not be shrinked as all values are   needed to ensure the well-typedness of the instanciated restricted evars.
Fixing bug 2129 (evar introduced to remember an ambiguous projection
had wrong type). At least two problems remain:
- projection involving evar should check the type are compatible,
- instances of filtered evars should not be shrinked as all values are
  needed to ensure the well-typedness of the instanciated restricted evars.

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@12226 85f007b7-540e-0410-9357-904b9bb8a0f7

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