Coqide: undo comments (Second part of r14268)
Coqide: undo comments (Second part of r14268)

If a comment is a sentence not sent to coq, undoing a comment mustn't
undo anything !

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@14273 85f007b7-540e-0410-9357-904b9bb8a0f7

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