The GTK resource handling can now provide the path to resources rather
than having to compute them separately. This reduces run time
allocation and allows for the resources to be built in if required.
Additionally this tweaks the resource scheme handling to redirect
favicon.ico to resource:favicon.png instead of rewriting directly to
file scheme path allowing the favicon to be a compiled in resource.
This adds API to obtain direct pointers to arrays of data from
compiled in resources. Additionally it hooks this up to provide data
for the resourece scheme handler.
This makes the GTK resource handling configurable in the same way as
all other pkg-config style feature options.
It is now possible to completely disable compiled in resources if
wanted as well as forcing inline pixdata on if desired.
Before GResource it was possible to compile pixbufs as inline
elements. This has historically been done for the menu cursor
only.
This change integrates the inline support and uses it when the
GResource support is not selected.
GTK UI builder resources have till now been exclusively stored on disc
requiring netsurf to ship numerous additional resource files. This
requires going to disc every time a UI action is performed which can
become a lot of unwanted file handling.
GLib/GTK has moved towards GResource handling for such resources
instead. It now seems that migrating to this style of usage is
expected and indeed the only portable way to include pixbufs.
This introduces an API to hide the various implementation details of
how resources are handled from the rest of the codebase.
