[readlink -f] doesn't work on OSX
[readlink -f] doesn't work on OSX

We only want an absolute path, no need to follow symlinks.

silene/coq,maximedenes/coq,maximedenes/coq,william-lawvere/coq,ppedrot/coq,ppedrot/coq,silene/coq,ejgallego/coq,SkySkimmer/coq,Zimmi48/coq,gares/coq,amintimany/coq,maximedenes/coq,ppedrot/coq,JasonGross/coq,Zimmi48/coq,SkySkimmer/coq,Matafou/coq,letouzey/coq-wip,letouzey/coq-wip,SkySkimmer/coq,SkySkimmer/coq,gares/coq,ejgallego/coq,JasonGross/coq,gares/coq,silene/coq,gares/coq,maximedenes/coq,coq/coq,letouzey/coq-wip,Lionel-Rieg/coq,maximedenes/coq,ejgallego/coq,william-lawvere/coq,gares/coq,amintimany/coq,william-lawvere/coq,Zimmi48/coq,Lionel-Rieg/coq,coq/coq,Zimmi48/coq,coq/coq,JasonGross/coq,Matafou/coq,letouzey/coq-wip,ejgallego/coq,amintimany/coq,ppedrot/coq,Matafou/coq,letouzey/coq-wip,JasonGross/coq,ppedrot/coq,coq/coq,Lionel-Rieg/coq