removed some code duplication in Fake
removed some code duplication in Fake

rgrinberg/merlin,dra27/merlin,fxfactorial/merlin,ocaml/merlin,haselwarter/merlin,neojski/merlin,the-lambda-church/merlin,haselwarter/merlin,rgrinberg/merlin,fxfactorial/merlin,chambart/merlin,dra27/merlin,dra27/merlin,rgrinberg/merlin,fxfactorial/merlin,ocaml/merlin,neojski/merlin,fxfactorial/merlin,the-lambda-church/merlin,chambart/merlin,chriskonstad/merlin,haselwarter/merlin,neojski/merlin,dra27/merlin,chambart/merlin,chriskonstad/merlin,the-lambda-church/merlin,neojski/merlin,haselwarter/merlin,ocaml/merlin,rgrinberg/merlin,ocaml/merlin,chambart/merlin