Merlin_typer: check signature inclusion to prevent warnings about unused declarations
Merlin_typer: check signature inclusion to prevent warnings about unused declarations

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