Makefile.build: (slightly) more robust sed invocation for parsing camlp4deps/use lines
Makefile.build: (slightly) more robust sed invocation for parsing camlp4deps/use lines

 The build error Y. Makarov recently reported on coq-club was caused by some
 .ml4 having dos-style end-of-line in his source-tree, and hence \r appearing in
 the camlp4o commandline. We now simply discard what appears after camlp4xxx "...".

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@12871 85f007b7-540e-0410-9357-904b9bb8a0f7

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