cairo: Update to 1.12.12.

This is a major update to the latest stable version.

* Enable introspection support.
* Ship introspection with own packages.
gdk-pixbuf2: Update to 2.27.1.

Major update to latest stable.
glib2: Update to 2.35.4.

Update to the latest stable version.
gobject-intospection: Update to 1.35.4.

Update to the latest version.
icu: New package.

This is a build dependency of harfbuzz with icu support and webkitgtk3.
harfbuzz: Update to 0.9.12.

This is an update to the latest stable version of harfbuzz.
Activate support for icu.
pango: Update to 1.32.5.

Update to the latest stable version.
Enable introspection support.
curl: Update to 7.29.0.

Major update to latest version. Fixes CVE-2013-0249.