[configure] adds a `select_command` function
[configure] adds a `select_command` function

Zimmi48/coq,ejgallego/coq,letouzey/coq-wip,silene/coq,gares/coq,ppedrot/coq,gares/coq,JasonGross/coq,Zimmi48/coq,Matafou/coq,coq/coq,SkySkimmer/coq,SkySkimmer/coq,letouzey/coq-wip,JasonGross/coq,ppedrot/coq,JasonGross/coq,silene/coq,ejgallego/coq,maximedenes/coq,maximedenes/coq,coq/coq,SkySkimmer/coq,Zimmi48/coq,ejgallego/coq,SkySkimmer/coq,ppedrot/coq,ejgallego/coq,letouzey/coq-wip,coq/coq,silene/coq,gares/coq,gares/coq,gares/coq,Zimmi48/coq,maximedenes/coq,letouzey/coq-wip,Matafou/coq,letouzey/coq-wip,maximedenes/coq,coq/coq,ppedrot/coq,Matafou/coq,JasonGross/coq,ppedrot/coq,maximedenes/coq