MSVC 2010+ Projects: Update "Installation" Process

Currently, due to the way that Visual Studio 2010+ projects are handled,
the "install" project does not re-build upon changes to the sources, as it
does not believe that its dependencies have changed, although the changed
sources are automatically recompiled.  This means that if a part or more
of the solution does not build, or if the sources need some other fixes
or enhancements, the up-to-date build is not copied automatically, which
can be misleading.

Improve on the situation by forcing the "install" project to trigger its
rebuild, so that the updated binaries can be copied.  This does trigger an
MSBuild warning, but having that warning is way better than not having an
up-to-date build, especially during testing and development.
updateiconcache: Don't include image data by default anymore

Since large images are in the icon cache, and apps don't tend to use that
many icons anymore, simply don't include image data and instead make apps
load files from disk. Additionally, since they're stored in GdkPixbuf data,
that means that we have to first convert them either to a cairo_surface_t,
which requires converting pixel data to be premulitplied, or an OpenGL
texture, which requires a whole GPU upload anyway.

So, even with the icon cache, the goal of icons through zero-copy, mmap()'d
data from disk just isn't doable with the icon cache format we have. The
icon cache on my disk is nearing 100MB, since we include a bunch of
high-resolution application icons, that I doubt would be used by apps at all.
Removing this inefficient pixel data makes memory usage for all applications
go down, with no speed loss.

The icon cache also, however, has an index of what icons are in each folder,
which prevents a readdir() and allows GTK+ to know what icon is where without
having to do a bunch of stat(); calls. Keeping this data is good for GTK+,
so we should still keep the index.

It doesn't make sense to remove any code for mapping pixel data from the icon
cache. There's a plan in the works to have a symbolic icon cache that does
pixel math on 16x16 icons to prevent slow SVG rendering. 16x16 pixels are
fairly small, and such images are flat colors, which should compress easily,
so the icon cache would be worthwhile here. So let's keep the code around
in preparation for that case.

https://bugzilla.gnome.org/show_bug.cgi?id=721895
gtk-update-icon-cache: Add an --include-image-data option

Now that we don't include the image data by default anymore,
lets add an option that  does it.

Conflicts:
	docs/reference/gtk/gtk-update-icon-cache.xml
Updated Polish translation
Updated Hebrew translation
Merge branch 'gtk-2-24' of git://git.gnome.org/gtk+ into gtk-2-24