Link ncurses bindings against libtinfo and libgpm

This is needed to produce static binaries.

_oasis

@@ -45,7 +45,7 @@ Library interfacencurses
   CompiledObject:   native
   Path:             src/ncurses
   BuildTools:       ocamlbuild
-  CCLib: -lm -lcurses -lreadline
+  CCLib: -lm -lreadline -lcurses -ltinfo -lgpm
 
   # Warning: we use C++ sources in .c files because oasis does not recognize
   # cpp-files