modified the unification algorithm to try first order unification before doing head beta-reduction. (cf coqbugs #181)
modified the unification algorithm to try first order unification before
doing head beta-reduction. (cf coqbugs #181)


git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@3595 85f007b7-540e-0410-9357-904b9bb8a0f7

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