Updating extlib to 1.7.2

[Andy Li <andy@onthewings.net>]

Hi,

I've updated extlib to upstream release 1.7.2 and made some minor package improvements.

Would you review and sponsor it?

The changes are pushed to alioth: https://anonscm.debian.org/cgit/pkg-ocaml-maint/packages/extlib.git/

The changelog:

extlib (1.7.2-1) unstable; urgency=low

  * Team upload.

  * New upstream release.

    - Update ocamldoc generation.

  * standards-version 4.1.1 (no change)

  * Add dh_missing --fail-missing.

  * Add autopkgtest support.

 -- Andy Li <andy@onthewings.net>  Tue, 28 Nov 2017 14:30:15 +0800

Best regards,

Andy