emacs: Re-arrange message sending code

Define a new `mail-user-agent' (`notmuch-user-agent') and use it by
default. Re-arrange various routines that send mail to use this
(compose, reply, forward). Insert a `User-Agent:' header by default.

diff --git a/emacs/Makefile.local b/emacs/Makefile.local
index 6a7fba9e6711342ae23aa423e7ca859a50c9fbaa..e5013b360bb4f03b8afc53bc7512fb9565d9e246 100644 (file)
--- a/emacs/Makefile.local
+++ b/emacs/Makefile.local
@@ -7,7 +7,8 @@ emacs_sources := \
        $(dir)/notmuch-query.el \
        $(dir)/notmuch-show.el \
        $(dir)/notmuch-wash.el \
-       $(dir)/notmuch-hello.el
+       $(dir)/notmuch-hello.el \
+       $(dir)/notmuch-mua.el
 
 emacs_images := \
        $(dir)/notmuch-logo.png