Makefile.build: compile the stdlib with -dont-load-proofs by default
Makefile.build: compile the stdlib with -dont-load-proofs by default

 Since library files aren't meant to contain queries like Print Assumptions
 nor extractions, it is safe (and quite quicker) to compile them with
 -dont-load-proofs

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@13918 85f007b7-540e-0410-9357-904b9bb8a0f7

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