Updated elisp FCC patches (was: Fcc, Maildir, and Emacs message-mode)

[Sebastian Spaeth]

My last mail on this issue: I squashed the recent 7 patch series into 4 nicer
ones.

Rather than resending the patch series, here are the 4 commits from my
repo at git at github.com:spaetz/notmuch-all-feature.git (let me know if I
should mail them too).
(These 4 are in the feature/elisp feature branch based on current cworth)

9e27ea17e9cb2ec69f90f8b5288bd9fe29946356
Add (unchanged) elisp file for FCC to maildir solution

bdcccb5faa86233f0afd66001b566054ffdb6be3
Integrate notmuch-maildir-fcc into notmuch

e6d7456094431959f8621d3cf36e1862bfdbbf62
notmuch-maildir-fcc: elisp syntax fixes

b339830a8b2853a0c683773e2bdb03e0f6df2de7
Integrate notmuch-fcc mechansim

I don't know how to test the emacs interaction or I would have provided
some tests with it. Also, I am not sure if the error message still
shows up when the user configures a non-existing maildir. But other than
that it works nice and reliably here. I have now dumped my python
script. I feel pretty confident that this can go in.