Annotations for command line arguments and environment variables

[Christoph Reiter <reiter christoph gmail com>]

Hey everyone,

I'm currently trying to improve filename and argv/environ handling in
PyGObject and started annotating filenames as "filename" and also argv/environ
related arguments as "filename" as they are treated the same way in Python.

I've (among others) filed

https://bugzilla.gnome.org/show_bug.cgi?id=767266

and

https://bugzilla.gnome.org/show_bug.cgi?id=767268

where it was pointed out that argv/environ should maybe not be annotated as
filename and on IRC uint8 arrays were suggested instead. The later would
result in API breakage in PyGObject, but could be mostly worked around using
overrides.

So, I'm wondering how other bindings handle that issue and how an annotation
change for, say gtk_init() to either "filename" or "uint8 array" would affect
other bindings. Or if someone has a better idea.