Coqc: fix the exit code
Coqc: fix the exit code

 Patch suggested by Benjamin Monate

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@14016 85f007b7-540e-0410-9357-904b9bb8a0f7

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