STM pretty printer should never fail
STM pretty printer should never fail

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@16777 85f007b7-540e-0410-9357-904b9bb8a0f7

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