package:
- debian/control.in: Bump build dependencies to multiarch aware versions.
- debian/control.in: Add Multi-Arch: and necessary Pre-Depends: fields.
(libraries/-dbg are "same", -doc/-bin are "foreign").
- debian/rules: Use multiarch LIBDIR.
- debian/libgail-3-dev.install, debian/libgail-3-0.install: Rename to
*.in, and use @LIBDIR@ instead of hardcoded usr/lib.
- debian/gir1.2-gtk-3.0.install.in: Use @LIBDIR@.
- debian/libgtk-3-0.triggers.in, debian/libgtk-3-0.postinst.in,
debian/rules: Also trigger on changes to the fallback non-multiarch
module directory, which is now called @OLD_MODULES_BASE_PATH@.
- Add 061_multiarch_module_fallback.patch: Fall back to the hard-coded
pre-multiarch module directory when searching for modules. This
maintains compatibility with packages installing modules to
the old directories.