Log Message:
Update glib2 to 2.42.2

Overview of changes in GLib 2.42.2
==================================

* Bugs fixed:
 712570 Hang in g_threaded_socket_service_func
 719455 g_file_make_directory_with_parents() can erroneously throw...
 727829 win32: glibconfig.h.win32 updates
 734946 Implement GContentType on OSX
 741024 glist: Mention that g_list_length() is bad for checking li...
 741654 [patch] gobject: don't use G_STRLOC in G_OBJECT_WARN_INVAL...
 741788 Document GSettings build system integration
 741807 Add thread name support on OS X and iOS
 742851 avoid MSVC warnings in G_STMT_END
 743508 polkitd fails to start: patch for gio/gcredentialsprivate.h
 743936 handle unsigned modifier for long long in internal printf

* Translation updates:
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