[gmime] Created tag 2.1.7

[Jeffrey Stedfast <fejj src gnome org>]

The unsigned tag '2.1.7' was created.

Tagger: Jeffrey Stedfast <jestedfa microsoft com>
Date: Tue Feb 7 12:02:30 2017 -0500

    Tagged for 2.1.7

Changes since the last tag '2.1.15':

Jeffrey Stedfast (3):
      fixed a bunch of type-o's thanks to Olly Betts
      Handle the case where the number of tokens returned from datetok is 0
      libexecdir fixes by Stanislav

Joe Shaw (3):
      libexecdir isn't right; we should be using $prefix/lib instead.
      Require gtk-sharp 2 for the mono bindings.
      Install gmime-api.xml into gapi-2.0