In a later commit we'll add a new generic client function used by
nmcli and nmtui. nm-client-utils.c seems the right place for it, so
move the file to the base library that is used by both clients.
While at it, also put in that file some functions that will be needed
by nmtui.
This changes behavior, in that yes|no prompt and answer is no longer
localized.
For command line arguments, I think it is always wrong for nmcli to
behave differently based on the localization. That is, input properties
on command line should not be translated.
One could make an argument, that in interactive mode that is different
and the user can be prompted in the his language.
But I think for consistency, it is wrong to ask for localized nmcli input.
These functions are only used by nm-meta-setting-desc.c. Make them internal.
Unfortunately, they are part of "common.h" which cannot be used without
the rest of nmcli. Still todo.
