Update mh.c

Fix for issue 22: Warnings when building
(fix for Warning A only)
01-progress-bar.patch for Gentoo

http://article.gmane.org/gmane.mail.mutt.devel/18743

Adds a "progress" color item that draws a vertical progress bar in the
last line.
Revert "Fix build without libidn"

This reverts commit 2bafd5984164930412b5037f61fe4f2c1ffd5fc8.
fix various compiler warnings; most were due to unchecked return values from system calls.
use gethostname() to determine the system host name

use getaddrinfo() to look up canonical DNS name, and fall back to hinting from /etc/resolv.conf

see #3298
Backed out changeset 1142ed8974fa
backout c1371176ea45
Don't exit pager if quit=ask is answered "no".

This patch addresses ticket 2788.

Currently if you quit ('Q') from inside the pager, with quit=ask-yes
or quit=ask-no, and you respond "no", mutt leaves you back in the index
menu.

This patch changes it so that mutt does not exit the pager.
Merge https://github.com/Wuodan/mutt-kz
notmuch: count messages for mutt progress bar

Signed-off-by: Karel Zak <kzak@redhat.com>