locate: add pkg paths to source paths (fix #235)
locate: add pkg paths to source paths (fix #235)

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