Verification Tools: Add verification tools module.
Shortcodes: use has_shortcode to check if shortcode exists

has_shortcode was introduced in 3.6. It's now safe to use in Jetpack
Contact Form: remove old conditional, oops

Error introduced in  9cc9561fdf596e7e2856f2e0c568c12b1dd1a5e5
Enabling HTTPS for the Tumblr sharing button

The Tumblr image can be served over https, so this change 
uses the http() method to use https when the page uses https.
Changed 4 hard coded links to protocol agnostic

In four places, links were hard coded to http
where the resources were also available over
https. Those links were changed to protocol
agnostic links in order to seamlessly use
the appropriate protocol.
Multisite: CHanging default subsite connection override and updating wording

The Network Admin can allow the Individual Site Admins the ability to reconnect with their
own WordPress.com account. Also did a minor word change to the setting to make it easier
to understand what the setting does.
Add missing <?php tag
Multisite: Remove display from Network Admin > Sites due to bug on release day
Languages: 2.9 translations.
Fix title escaping issue
Merge pull request #268 from xyu/module-related-posts

Fix title escaping issue
REST API

Add a caveat if we get back a WP_Error.

Props @justinshreve

ref 92567
REST API: add xmlrpc to a site's meta.links

We need a reference to a site's XML-RPC URL for the mobile apps until
we move to using only REST.
The XML-RPC endpoint can't be inferred from URL because of mapped
domains.

Props @koke
REST API: Track API errors that we return.

Props @justinshreve
Publicize Media Summary --

Add an extra if check to catch galleries.

Props @justinshreve, ref 91750
Twitter Cards: Add in twitter:site

Allow customization of the `twitter:site` setting via the twitter via
setting.

Thanks to @mjangda for the suggestion.

Props @justinshreve, ref 92129
locales.php - Add Irish!

Add the wp_locale for irish.

Props @westi, @nacin

See: https://glotpress.trac.wordpress.org/changeset/831
locales: Merge r823-glotpress

Add support for Fulah

See: https://glotpress.trac.wordpress.org/changeset/823

Props @zedejose
locales: merge r830-glotpress

Add support for Tigrinya, per
http://en.forums.wordpress.com/topic/language-list

See: https://glotpress.trac.wordpress.org/changeset/830

Props @zedejose
Swapping to the wpcom minified versions of the images.