Import glib2-2.34.3 as wip/glib2.

For testing patches aimed at Darwin.

GLib provides the core application building blocks for libraries
and applications written in C.  It provides the core object system
used in GNOME, the main loop implementation, and a large set of
utility functions for strings and common data structures.

This package contains GLib version 2.
Test package for glib2 patches.