[MIR] notmuch (runtime dependency of mutt)

[Matthias Klose]

Availability:
- Already in universe and available on applicable archs.

Rationale:
- Allows using index flags/tags support in mutt and sync on both ways with IMAP servers

https://notmuchmail.org/howto/
http://upsilon.cc/~zack/blog/posts/2011/01/how_to_use_Notmuch_with_Mutt/

Security:
- Never had a CVE after 2012 (one in 2012 found)

Quality assurance:
- Good testsuite (it does fail on armhf due to a new gdb issue, not a code issue
- library with symbols file.
- binding for Python/Ruby
- interface with mutt/emacs/vim

The status of important bugs in Debian's, Ubuntu's, and upstream's bug tracking systems must be evaluated. Links to these bug trackers need to be provided in the MIR report. Important bugs must be pointed out and discussed in the MIR report.
https://bugs.debian.org/cgi-bin/pkgreport.cgi?ordering=normal;archive=0;src=notmuch;dist=unstable;repeatmerged=0 - Almost all the ~20 bugs found
are about missing features, Upstream is also Debian and prompt to fix everything that is worth a fix.

1 bug 5 years old found in ubuntu's bug tracker, not sure if it can be reproduced now (a spurious crash with a 5 years old version).

[Matthias Klose (doko)]

looks ok. subscribed foundations.

Override component to main
notmuch 0.22.1-3ubuntu2 in yakkety: universe/mail -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety amd64: universe/libdevel/extra/100% -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety arm64: universe/libdevel/extra/100% -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety armhf: universe/libdevel/extra/100% -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety i386: universe/libdevel/extra/100% -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety powerpc: universe/libdevel/extra/100% -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety ppc64el: universe/libdevel/extra/100% -> main
libnotmuch-dev 0.22.1-3ubuntu2 in yakkety s390x: universe/libdevel/extra/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety amd64: universe/libs/optional/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety arm64: universe/libs/optional/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety armhf: universe/libs/optional/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety i386: universe/libs/optional/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety powerpc: universe/libs/optional/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety ppc64el: universe/libs/optional/100% -> main
libnotmuch4 0.22.1-3ubuntu2 in yakkety s390x: universe/libs/optional/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety amd64: universe/mail/extra/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety arm64: universe/mail/extra/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety armhf: universe/mail/extra/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety i386: universe/mail/extra/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety powerpc: universe/mail/extra/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety ppc64el: universe/mail/extra/100% -> main
notmuch 0.22.1-3ubuntu2 in yakkety s390x: universe/mail/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety amd64: universe/debug/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety arm64: universe/debug/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety armhf: universe/debug/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety i386: universe/debug/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety powerpc: universe/debug/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety ppc64el: universe/debug/extra/100% -> main
notmuch-dbg 0.22.1-3ubuntu2 in yakkety s390x: universe/debug/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety amd64: universe/mail/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety arm64: universe/mail/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety armhf: universe/mail/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety i386: universe/mail/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety powerpc: universe/mail/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety ppc64el: universe/mail/extra/100% -> main
notmuch-emacs 0.22.1-3ubuntu2 in yakkety s390x: universe/mail/extra/100% -> main
notmuch-mutt 0.22.1-3ubuntu2 in yakkety amd64: universe/mail/extra/100% -> main
notmuch-mutt 0.22.1-3ubuntu2 in yakkety arm64: universe/mail/extra/100% -> main
notmuch-mutt 0.22.1-3ubuntu2 in yakk...