[Libguestfs] [PATCH] lib: update inspect_list_applications to return app_arch

[John Eckersberg]

(Resending to the list since I fat-fingered the address the first time...)

Here's the series rebased and squashed down into one commit.  Also I
added in the strndup suggestion.  Still ignoring the fact that it
breaks the ABI for now until we decide what to do about that.