[vala] Created tag 0.28.1

[Jürg Billeter <juergbi src gnome org>]

The signed tag '0.28.1' was created.

Tagger: Jürg Billeter <j bitron ch>
Date: Tue Aug 11 21:09:29 2015 +0200

    0.28.1

Changes since the last tag '0.28.0':

Jürg Billeter (1):
      Release 0.28.1

Luca Bruno (1):
      codegen: check for null value before calling g_strv_length

Rico Tzschichholz (5):
      vapi: Update GIR-based bindings
      gtk+-3.0: Update to 3.16.1
      Revert "glib-2.0: Conditionally use boxed OptionContext since 2.44"
      glib-2.0: Conditionally use boxed OptionGroup since 2.44
      codegen: fix generating struct equal function