Updated package to latest version, 1.6.1. Changes include:
- 1.6.1: Just an important doc fix.
- 1.6.0: Adding support for dynamically loading packages (Fran巽ois Bobot):
  new "plugin" variable, new Fl_dynload module.
  New command "ocamlfind lint" for checking META files (Fran巽ois Bobot).
  Also support MSYS_NT on Windows. Permit spaces in install paths
  (Christophe Troestler).
  Allow to query the location of the META file of a package:
  "ocamlfind query -format '%m'" (Gerd Stolpmann).
  Get the install path for the META file of packages:
  "ocamlfind printconf metapath" (Gerd Stolpmann).
- 1.5.6: for MSVC build fixing bad filename suffix (Dmitry Bely).
  The switch -only-show did not work as described.
  (Error report from Bob Atkey.)</p>
  Also support mingw64 as system type (Matthieu Dubuget).

Also some changes to wrapper scripts, needed for lang/coq.

(jaapb)