Fix s:MakeJob for Vim on Windows (use string for argv)
Fix s:MakeJob for Vim on Windows (use string for argv)

Ref: https://github.com/neomake/neomake/issues/694#issuecomment-254046650

euclio/neomake,neomake/neomake,bonds/neomake,neomake/neomake,bonds/neomake,datanoise/neomake,nerdrew/neomake,nerdrew/neomake,euclio/neomake,codeinabox/neomake