Handle the alternative findlib directory layout
Handle the alternative findlib directory layout

Some packages still use this, such as ocp-blah and llvm

janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,rdavison/jbuilder,rdavison/jbuilder