gnus: Enable functions in gnus-summary-mode

It makes sense for all of these functions to support gnus-summary-mode
because point is often in the summary buffer when reading a thread.  I
punted on doing so initially because something probably should be done
to ensure that the gnus-article-* variables that these functions rely
on are up to date with the current line in the summary buffer.

I'm still not sure of the best way to do that (assuming it really is
an issue), but I think for common usage patterns the values won't be
stale (e.g., browsing with gnus-summary-next-page and
gnus-summary-next-unread-article), so simply relying on the current
values may be good enough.

0 files changed, 0 insertions, 0 deletions