[gobject-introspection] Created tag 1.53.3

[Rico Tzschichholz <ricotz src gnome org>]

The signed tag '1.53.3' was created.

Tagger: Rico Tzschichholz <ricotz ubuntu com>
Date: Tue Jun 20 23:19:28 2017 +0200

    Tag release 1.53.3

Changes since the last tag '1.53.2':

Chun-wei Fan (2):
      Visual Studio builds: Use the Centricular fork of libffi
      giscanner/utils.py: Fix on non-UNIX-like platforms

Rico Tzschichholz (2):
      gir: Update annotations from GLib 2.53.3
      Release 1.53.3

Simon McVittie (1):
      When handling errors according to errno, catch both IOError and OSError