When faced with a `GType` which is present in multiple typelibs, the old
implementation was not deterministic, as it iterated over a hash table
of typelibs. The iteration order of a hash table is not deterministic.
Use the new `ordered_typelibs` and `ordered_lazy_typelibs` arrays to
iterate instead, making the order deterministic.
Add a unit test to check this. In particular, to check that symbols
which are present in both `Gio` and `GioUnix` are correctly resolved as
being from `GioUnix`.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Helps: #3303
These tests come from gobject-introspection/tests/repository/. They
include whatever wasn't already covered by the existing tests.
The original files didn't have copyright information. That's been
reconstructed from commit messages of commits that added a test or a
substantial part of one.