docs: Add GtkListBox to docs
broadway: Add configure checks for sys/mman.h
broadway: Remove unused includes
broadway: Only use gio-unix on G_OS_UNIX
broadway: Support TCP displays
broadway: Add win32 support
GtkStack: Add position-dependent slide transitions

These go left/right or up/down depending on the relative
order of the children being switched between.
GtkStack: Fix drawing of sliding

We were not drawing the view window, so the old widget
was clipped for the sliding transitions.
GtkStack: Switch order on left/right up/down transitions.

When the new child is on the left, scroll right. This makes the
thing look physically "real".
Updated POTFILES.in
GtkHeaderBar: Make labels creation available privately

So it can be reused in subclasses

https://bugzilla.gnome.org/show_bug.cgi?id=701345
GtkHeaderBar: Fix buildable function names

It's a GtkHeaderBar, not GtkHeader.

https://bugzilla.gnome.org/show_bug.cgi?id=701346
GtkSearchBar: Mention we don't handle Ctrl+F for the app

There's probably an expectation from the app developers that
Ctrl+F or similar common shortcuts for starting a search will
be handled by the widget, when this is not the case. Explicitely
mention it in the docs to avoid confusion.

https://bugzilla.gnome.org/show_bug.cgi?id=701523
GtkListBox: cosmetics

Clean up formatting trivia, adjust includes to gtk conventions,
use P_() for properties, etc.
Updated POTFILES.in
GtkListBox: fix docs

New types need to be added to gtk3.types.in to have introspected
data (type hierarchy, properties, signals) show up in the docs.
testsuite: clean up build machinery a bit

No point in setting LDADD for every single binary,
when we can do it just once. Also, generate test.in files.
Add listbox tests
testsuite: Avoid g_test_trap_fork

Fix cellarea tests to use g_test_trap_subprocess instead.
Fix defaultvalue test